diff --git a/requirements.txt b/requirements.txt
index c5ed58b1..96142f5b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ gunicorn==18.0
 psycopg2==2.5.3
 pytz==2014.4
 six==1.6.1
-djmail==0.6
+djmail==0.7
 django-pgjson==0.1.2
 django-jinja==1.0.1
 jinja2==2.7.2
diff --git a/settings/local.py.example b/settings/local.py.example
index 0c3c4415..9ba66b76 100644
--- a/settings/local.py.example
+++ b/settings/local.py.example
@@ -46,3 +46,10 @@ from .development import *
 #EMAIL_HOST_USER = 'youremail@gmail.com'
 #EMAIL_HOST_PASSWORD = 'yourpassword'
 #EMAIL_PORT = 587
+
+# GITHUP SETTINGS
+#GITHUB_URL = "https://github.com/"
+#GITHUB_API_URL = "https://api.github.com/"
+#GITHUB_API_CLIENT_ID = "yourgithubclientid"
+#GITHUB_API_CLIENT_SECRET = "yourgithubclientsecret"
+
diff --git a/taiga/auth/api.py b/taiga/auth/api.py
index 4987ee8b..11a0e41d 100644
--- a/taiga/auth/api.py
+++ b/taiga/auth/api.py
@@ -28,6 +28,7 @@ from rest_framework import serializers
 
 from taiga.base.decorators import list_route
 from taiga.base import exceptions as exc
+from taiga.base.connectors import github
 from taiga.users.services import get_and_validate_user
 
 from .serializers import PublicRegisterSerializer
@@ -37,6 +38,7 @@ from .serializers import PrivateRegisterForNewUserSerializer
 from .services import private_register_for_existing_user
 from .services import private_register_for_new_user
 from .services import public_register
+from .services import github_register
 from .services import make_auth_response_data
 
 
@@ -130,11 +132,34 @@ class AuthViewSet(viewsets.ViewSet):
             return self._private_register(request)
         raise exc.BadRequest(_("invalid register type"))
 
-    # Login view: /api/v1/auth
-    def create(self, request, **kwargs):
+    def _login(self, request):
         username = request.DATA.get('username', None)
         password = request.DATA.get('password', None)
 
         user = get_and_validate_user(username=username, password=password)
         data = make_auth_response_data(user)
         return Response(data, status=status.HTTP_200_OK)
+
+    def _github_login(self, request):
+        code = request.DATA.get('code', None)
+        token = request.DATA.get('token', None)
+
+        email, user_info = github.me(code)
+
+        user = github_register(username=user_info.username,
+                               email=email,
+                               full_name=user_info.full_name,
+                               github_id=user_info.id,
+                               bio=user_info.bio,
+                               token=token)
+        data = make_auth_response_data(user)
+        return Response(data, status=status.HTTP_200_OK)
+
+    # Login view: /api/v1/auth
+    def create(self, request, **kwargs):
+        type = request.DATA.get("type", None)
+        if type == "normal":
+            return self._login(request)
+        elif type == "github":
+            return self._github_login(request)
+        raise exc.BadRequest(_("invalid login type"))
diff --git a/taiga/auth/serializers.py b/taiga/auth/serializers.py
index f9b4e367..2b235d1d 100644
--- a/taiga/auth/serializers.py
+++ b/taiga/auth/serializers.py
@@ -17,8 +17,7 @@
 from rest_framework import serializers
 
 class BaseRegisterSerializer(serializers.Serializer):
-    first_name = serializers.CharField(max_length=200)
-    last_name = serializers.CharField(max_length=200)
+    full_name = serializers.CharField(max_length=256)
     email = serializers.EmailField(max_length=200)
     username = serializers.CharField(max_length=200)
     password = serializers.CharField(min_length=4)
diff --git a/taiga/auth/services.py b/taiga/auth/services.py
index f7dda5d7..cebc24e6 100644
--- a/taiga/auth/services.py
+++ b/taiga/auth/services.py
@@ -63,14 +63,18 @@ def send_private_register_email(user, **kwargs) -> bool:
     return bool(email.send())
 
 
-def is_user_already_registred(*, username:str, email:str) -> bool:
+def is_user_already_registred(*, username:str, email:str, github_id:int=None) -> bool:
     """
     Checks if a specified user is already registred.
     """
 
     user_model = get_model("users", "User")
-    qs = user_model.objects.filter(Q(username=username) |
-                                   Q(email=email))
+
+    or_expr = Q(username=username) | Q(email=email)
+    if github_id:
+        or_expr = or_expr | Q(email=email)
+
+    qs = user_model.objects.filter(or_expr)
     return qs.exists()
 
 
@@ -90,7 +94,7 @@ def get_membership_by_token(token:str):
 
 
 @tx.atomic
-def public_register(username:str, password:str, email:str, first_name:str, last_name:str):
+def public_register(username:str, password:str, email:str, full_name:str):
     """
     Given a parsed parameters, try register a new user
     knowing that it follows a public register flow.
@@ -107,8 +111,7 @@ def public_register(username:str, password:str, email:str, first_name:str, last_
     user_model = get_model("users", "User")
     user = user_model(username=username,
                       email=email,
-                      first_name=first_name,
-                      last_name=last_name)
+                      full_name=full_name)
     user.set_password(password)
     user.save()
 
@@ -138,21 +141,18 @@ def private_register_for_existing_user(token:str, username:str, password:str):
 
 @tx.atomic
 def private_register_for_new_user(token:str, username:str, email:str,
-                                  first_name:str, last_name:str, password:str):
+                                  full_name:str, password:str):
     """
     Given a inviation token, try register new user matching
     the invitation token.
     """
-
-    user_model = get_model("users", "User")
-
     if is_user_already_registred(username=username, email=email):
         raise exc.WrongArguments(_("Username or Email is already in use."))
 
+    user_model = get_model("users", "User")
     user = user_model(username=username,
                       email=email,
-                      first_name=first_name,
-                      last_name=last_name)
+                      full_name=full_name)
 
     user.set_password(password)
     try:
@@ -167,6 +167,30 @@ def private_register_for_new_user(token:str, username:str, email:str,
     return user
 
 
+@tx.atomic
+def github_register(username:str, email:str, full_name:str, github_id:int, bio:str, token:str=None):
+    """
+    Register a new user from github.
+
+    This can raise `exc.IntegrityError` exceptions in
+    case of conflics found.
+
+    :returns: User
+    """
+    user_model = get_model("users", "User")
+    user, created = user_model.objects.get_or_create(github_id=github_id,
+                                                     defaults={"username": username,
+                                                               "email": email,
+                                                               "full_name": full_name,
+                                                               "bio": bio})
+    if token:
+        membership = get_membership_by_token(token)
+        membership.user = user
+        membership.save(update_fields=["user"])
+
+    return user
+
+
 def make_auth_response_data(user) -> dict:
     """
     Given a domain and user, creates data structure
diff --git a/taiga/auth/tests.py b/taiga/auth/tests.py
index 1c023e3e..face1b4f 100644
--- a/taiga/auth/tests.py
+++ b/taiga/auth/tests.py
@@ -105,15 +105,13 @@ class AuthServicesTests(test.TestCase):
                                      username=self.user1.username,
                                      password="secret",
                                      email=self.user1.email,
-                                     first_name="foo",
-                                     last_name="bar")
+                                     full_name="foo")
 
         user = services.public_register(self.domain,
                                         username="foousername",
                                         password="foosecret",
                                         email="foo@bar.ca",
-                                        first_name="Foo",
-                                        last_name="Bar")
+                                        full_name="Foo")
         self.assertEqual(user.username, "foousername")
         self.assertTrue(user.check_password("foosecret"))
         self.assertTrue(is_user_exists_on_domain(self.domain, user))
@@ -153,8 +151,7 @@ class AuthServicesTests(test.TestCase):
                                                       username="user2",
                                                       password="user2",
                                                       email="user2@bar.ca",
-                                                      first_name="Foo",
-                                                      last_name="Bar")
+                                                      full_name="Foo")
 
 
         membership = membership.__class__.objects.get(pk=membership.pk)
@@ -195,8 +192,7 @@ class RegisterApiTests(test.TestCase):
         data = {
             "username": "pepe",
             "password": "pepepepe",
-            "first_name": "pepe",
-            "last_name": "pepe",
+            "full_name": "pepe",
             "email": "pepe@pepe.com",
             "type": "public",
         }
@@ -213,8 +209,7 @@ class RegisterApiTests(test.TestCase):
         data = {
             "username": "pepe",
             "password": "pepepepe",
-            "first_name": "pepe",
-            "last_name": "pepe",
+            "full_name": "pepe",
             "email": "pepe@pepe.com",
             "type": "public",
         }
@@ -227,8 +222,7 @@ class RegisterApiTests(test.TestCase):
         data = {
             "username": "pepe",
             "password": "pepepepe",
-            "first_name": "pepe",
-            "last_name": "pepe",
+            "full_name": "pepe",
             "email": "pepe@pepe.com",
             "type": "private",
         }
@@ -243,8 +237,7 @@ class RegisterApiTests(test.TestCase):
         data = {
             "username": "pepe",
             "password": "pepepepe",
-            "first_name": "pepe",
-            "last_name": "pepe",
+            "full_name": "pepe",
             "email": "pepe@pepe.com",
             "type": "private",
             "existing": False,
diff --git a/taiga/base/connectors/__init__.py b/taiga/base/connectors/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/taiga/base/connectors/exceptions.py b/taiga/base/connectors/exceptions.py
new file mode 100644
index 00000000..b7647e67
--- /dev/null
+++ b/taiga/base/connectors/exceptions.py
@@ -0,0 +1,27 @@
+# Copyright (C) 2014 Andrey Antukh <niwi@niwi.be>
+# Copyright (C) 2014 Jesús Espino <jespinog@gmail.com>
+# Copyright (C) 2014 David Barragán <bameda@dbarragan.com>
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from taiga.base.exceptions import BaseException
+
+from django.utils.translation import ugettext_lazy as _
+
+class ConnectorBaseException(BaseException):
+    status_code = 400
+    default_detail = _("Connection error.")
+
+
+class GitHubApiError(ConnectorBaseException):
+    pass
diff --git a/taiga/base/connectors/github.py b/taiga/base/connectors/github.py
new file mode 100644
index 00000000..344a44ce
--- /dev/null
+++ b/taiga/base/connectors/github.py
@@ -0,0 +1,160 @@
+# Copyright (C) 2014 Andrey Antukh <niwi@niwi.be>
+# Copyright (C) 2014 Jesús Espino <jespinog@gmail.com>
+# Copyright (C) 2014 David Barragán <bameda@dbarragan.com>
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import requests
+import json
+
+from collections import namedtuple
+from urllib.parse import urljoin
+
+from django.conf import settings
+
+from . import exceptions as exc
+
+
+######################################################
+## Data
+######################################################
+
+CLIENT_ID = getattr(settings, "GITHUB_API_CLIENT_ID", None)
+CLIENT_SECRET = getattr(settings, "GITHUB_API_CLIENT_SECRET", None)
+
+URL = getattr(settings, "GITHUB_URL", "https://github.com/")
+API_URL = getattr(settings, "GITHUB_API_URL",  "https://api.github.com/")
+API_RESOURCES_URLS = {
+    "login": {
+        "authorize": "login/oauth/authorize",
+        "access-token": "login/oauth/access_token"
+    },
+    "user": {
+        "profile": "user",
+        "emails": "user/emails"
+    }
+}
+
+
+HEADERS = {"Accept": "application/json",}
+
+AuthInfo = namedtuple("AuthInfo", ["access_token"])
+User = namedtuple("User", ["id", "username", "full_name", "bio"])
+Email = namedtuple("Email", ["email", "is_primary"])
+
+
+######################################################
+## utils
+######################################################
+
+def _build_url(*args, **kwargs) -> str:
+    """
+    Return a valid url.
+    """
+    resource_url = API_RESOURCES_URLS
+    for key in args:
+        resource_url = resource_url[key]
+
+    if kwargs:
+        resource_url = resource_url.format(**kwargs)
+
+    return urljoin(API_URL, resource_url)
+
+
+def _get(url:str, headers:dict) -> dict:
+    """
+    Make a GET call.
+    """
+    response = requests.get(url, headers=headers)
+
+    data = response.json()
+    if response.status_code != 200:
+        raise exc.GitHubApiError({"status_code": response.status_code,
+                                  "error": data.get("error", "")})
+    return data
+
+
+def _post(url:str, params:dict, headers:dict) -> dict:
+    """
+    Make a POST call.
+    """
+    response = requests.post(url, params=params, headers=headers)
+
+    data = response.json()
+    if response.status_code != 200 or "error" in data:
+        raise exc.GitHubApiError({"status_code": response.status_code,
+                                  "error": data.get("error", "")})
+    return data
+
+
+######################################################
+## Simple calls
+######################################################
+
+def login(access_code:str, client_id:str=CLIENT_ID, client_secret:str=CLIENT_SECRET,
+          headers:dict=HEADERS):
+    """
+    Get access_token fron an user authorized code, the client id and the client secret key.
+    (See https://developer.github.com/v3/oauth/#web-application-flow).
+    """
+    url = urljoin(URL, "login/oauth/access_token")
+    params={"code": access_code,
+            "client_id": client_id,
+            "client_secret": client_secret,
+            "scope": "user:emails"}
+    data = _post(url, params=params, headers=headers)
+    return AuthInfo(access_token=data.get("access_token", None))
+
+
+def get_user_profile(headers:dict=HEADERS):
+    """
+    Get authenticated user info.
+    (See https://developer.github.com/v3/users/#get-the-authenticated-user).
+    """
+    url = _build_url("user", "profile")
+    data = _get(url, headers=headers)
+    return User(id=data.get("id", None),
+                username=data.get("login", None),
+                full_name=(data.get("name", None) or ""),
+                bio=(data.get("bio", None) or ""))
+
+
+def get_user_emails(headers:dict=HEADERS) -> list:
+    """
+    Get a list with all emails of the authenticated user.
+    (See https://developer.github.com/v3/users/emails/#list-email-addresses-for-a-user).
+    """
+    url = _build_url("user", "emails")
+    data = _get(url, headers=headers)
+    return [Email(email=e.get("email", None), is_primary=e.get("primary", False))
+                    for e in data]
+
+
+######################################################
+## Convined calls
+######################################################
+
+def me(access_code:str) -> tuple:
+    """
+    Connect to a github account and get all personal info (profile and the primary email).
+    """
+    auth_info = login(access_code)
+
+    headers = HEADERS.copy()
+    headers["Authorization"] = "token {}".format(auth_info.access_token)
+
+    user = get_user_profile(headers=headers)
+    emails = get_user_emails(headers=headers)
+
+    primary_email = next(filter(lambda x: x.is_primary, emails))
+    return primary_email.email, user
diff --git a/taiga/projects/issues/api.py b/taiga/projects/issues/api.py
index 347b97dd..1e54602d 100644
--- a/taiga/projects/issues/api.py
+++ b/taiga/projects/issues/api.py
@@ -96,8 +96,7 @@ class IssuesOrdering(filters.FilterBackend):
 
         if order_by in ['owner', '-owner', 'assigned_to', '-assigned_to']:
             return queryset.order_by(
-                '{}__first_name'.format(order_by),
-                '{}__last_name'.format(order_by)
+                '{}__full_name'.format(order_by)
             )
         return queryset
 
diff --git a/taiga/projects/management/commands/sample_data.py b/taiga/projects/management/commands/sample_data.py
index 838905eb..bb9d3a7b 100644
--- a/taiga/projects/management/commands/sample_data.py
+++ b/taiga/projects/management/commands/sample_data.py
@@ -290,8 +290,7 @@ class Command(BaseCommand):
     def create_user(self, counter):
         user = User.objects.create(
                 username='user-{0}'.format(counter),
-                first_name=self.sd.name('es'),
-                last_name=self.sd.surname('es', number=1),
+                full_name="{} {}".format(self.sd.name('es'), self.sd.surname('es', number=1)),
                 email=self.sd.email(),
                 token=''.join(random.sample('abcdef0123456789', 10)),
                 color=self.sd.choice(COLOR_CHOICES))
diff --git a/taiga/projects/serializers.py b/taiga/projects/serializers.py
index aeb2f868..b231e07e 100644
--- a/taiga/projects/serializers.py
+++ b/taiga/projects/serializers.py
@@ -109,7 +109,7 @@ class ProjectDetailSerializer(ProjectSerializer):
     issue_types = IssueTypeSerializer(many=True, required=False)
 
     def get_membership(self, obj):
-        qs = obj.memberships.order_by('user__first_name', 'user__last_name', 'user__username')
+        qs = obj.memberships.order_by('user__full_name', 'user__username')
         qs = qs.select_related("role", "user")
 
         serializer = ProjectMembershipSerializer(qs, many=True)
@@ -117,7 +117,7 @@ class ProjectDetailSerializer(ProjectSerializer):
 
     def get_active_membership(self, obj):
         qs = obj.memberships.filter(user__isnull=False)
-        qs = qs.order_by('user__first_name', 'user__last_name', 'user__username')
+        qs = qs.order_by('user__full_name', 'user__username')
         qs = qs.select_related("role", "user")
 
         serializer = ProjectMembershipSerializer(qs, many=True)
diff --git a/taiga/projects/tests/tests_api.py b/taiga/projects/tests/tests_api.py
index 32a772ba..f2deffff 100644
--- a/taiga/projects/tests/tests_api.py
+++ b/taiga/projects/tests/tests_api.py
@@ -73,7 +73,7 @@ class ProfileTestCase(test.TestCase):
                                      password=self.user3.username)
         self.assertTrue(response)
 
-        data = {"first_name": "Foo Bar"}
+        data = {"full_name": "Foo Bar"}
 
         response = self.client.patch(
                         reverse("users-detail", args=[self.user2.pk]),
@@ -86,7 +86,7 @@ class ProfileTestCase(test.TestCase):
                                      password=self.user3.username)
         self.assertTrue(response)
 
-        data = {"first_name": "Foo Bar"}
+        data = {"full_name": "Foo Bar"}
         response = self.client.patch(
                         reverse("users-detail", args=[self.user3.pk]),
                         content_type="application/json",
@@ -99,7 +99,7 @@ class ProfileTestCase(test.TestCase):
                                      password=self.user1.username)
         self.assertTrue(response)
 
-        data = {"first_name": "Foo Bar"}
+        data = {"full_name": "Foo Bar"}
         response = self.client.patch(
                         reverse("users-detail", args=[self.user3.pk]),
                         content_type="application/json",
@@ -112,7 +112,7 @@ class ProfileTestCase(test.TestCase):
                                      password=self.user3.username)
         self.assertTrue(response)
 
-        data = {"first_name": "Foo Bar"}
+        data = {"full_name": "Foo Bar"}
         response = self.client.delete(
                         reverse("users-detail", args=[self.user2.pk]))
         self.assertEqual(response.status_code, 404)
@@ -122,7 +122,7 @@ class ProfileTestCase(test.TestCase):
                                      password=self.user3.username)
         self.assertTrue(response)
 
-        data = {"first_name": "Foo Bar"}
+        data = {"full_name": "Foo Bar"}
         response = self.client.delete(
                         reverse("users-detail", args=[self.user3.pk]))
 
@@ -134,7 +134,7 @@ class ProfileTestCase(test.TestCase):
                                      password=self.user1.username)
         self.assertTrue(response)
 
-        data = {"first_name": "Foo Bar"}
+        data = {"full_name": "Foo Bar"}
         response = self.client.delete(
                         reverse("users-detail", args=[self.user3.pk]))
 
diff --git a/taiga/projects/votes/serializers.py b/taiga/projects/votes/serializers.py
index 2bd473f2..1c089aff 100644
--- a/taiga/projects/votes/serializers.py
+++ b/taiga/projects/votes/serializers.py
@@ -8,4 +8,4 @@ class VoterSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = User
-        fields = ('id', 'username', 'first_name', 'last_name', 'full_name')
+        fields = ('id', 'username', 'full_name')
diff --git a/taiga/routers.py b/taiga/routers.py
index f09b1d55..809544f2 100644
--- a/taiga/routers.py
+++ b/taiga/routers.py
@@ -20,11 +20,9 @@ router = routers.DefaultRouter(trailing_slash=False)
 
 # taiga.users
 from taiga.users.api import UsersViewSet
-from taiga.users.api import PermissionsViewSet
 from taiga.auth.api import AuthViewSet
 
 router.register(r"users", UsersViewSet, base_name="users")
-router.register(r"permissions", PermissionsViewSet, base_name="permissions")
 router.register(r"auth", AuthViewSet, base_name="auth")
 
 
diff --git a/taiga/users/admin.py b/taiga/users/admin.py
index 8339c635..c258e17b 100644
--- a/taiga/users/admin.py
+++ b/taiga/users/admin.py
@@ -47,20 +47,19 @@ admin.site.register(Role, RoleAdmin)
 class UserAdmin(DjangoUserAdmin):
     fieldsets = (
         (None, {'fields': ('username', 'password')}),
-        (_('Personal info'), {'fields': ('first_name', 'last_name', 'email', 'description', 'photo')}),
+        (_('Personal info'), {'fields': ('full_name', 'email', 'bio', 'photo')}),
         (_('Extra info'), {'fields': ('color', 'default_language', 'default_timezone', 'token', 'colorize_tags')}),
         (_('Notifications info'), {'fields': ("notify_level", "notify_changes_by_me",)}),
-        (_('Permissions'), {'fields': ('is_active', 'is_staff', 'is_superuser',)}),
+        (_('Permissions'), {'fields': ('is_active', 'is_superuser',)}),
         (_('Important dates'), {'fields': ('last_login', 'date_joined')}),
     )
     form = UserChangeForm
     add_form = UserCreationForm
-
-
-class PermissionAdmin(admin.ModelAdmin):
-    list_display = ['name', 'content_type', 'codename']
-    list_filter = ['content_type']
-
+    list_display = ('username', 'email', 'full_name')
+    list_filter = ('is_superuser', 'is_active')
+    search_fields = ('username', 'full_name', 'email')
+    ordering = ('username',)
+    filter_horizontal = ()
 
 class RoleInline(admin.TabularInline):
     model = Role
@@ -68,4 +67,3 @@ class RoleInline(admin.TabularInline):
 
 
 admin.site.register(User, UserAdmin)
-admin.site.register(Permission, PermissionAdmin)
diff --git a/taiga/users/api.py b/taiga/users/api.py
index ee280d65..0a2ef5d0 100644
--- a/taiga/users/api.py
+++ b/taiga/users/api.py
@@ -20,7 +20,6 @@ from django.db.models.loading import get_model
 from django.db.models import Q
 from django.shortcuts import get_object_or_404
 from django.contrib.auth import logout, login, authenticate
-from django.contrib.auth.models import Permission
 from django.utils.translation import ugettext_lazy as _
 
 from rest_framework.response import Response
@@ -35,7 +34,8 @@ from taiga.base import exceptions as exc
 from taiga.base.api import ModelCrudViewSet, RetrieveModelMixin, ModelListViewSet
 
 from .models import User, Role
-from .serializers import UserSerializer, RecoverySerializer, PermissionSerializer
+from .serializers import UserSerializer, RecoverySerializer
+
 
 class MembersFilterBackend(BaseFilterBackend):
     def filter_queryset(self, request, queryset, view):
@@ -53,27 +53,6 @@ class MembersFilterBackend(BaseFilterBackend):
             else:
                 return queryset.filter(pk=request.user.id)
 
-class PermissionsViewSet(ModelListViewSet):
-    permission_classes = (IsAuthenticated,)
-    serializer_class = PermissionSerializer
-    paginate_by = 0
-    excluded_codenames = [
-        "add_logentry", "change_logentry", "delete_logentry",
-        "add_group", "change_group", "delete_group",
-        "add_permission", "change_permission", "delete_permission",
-        "add_contenttype", "change_contenttype", "delete_contenttype",
-        "add_message", "change_message", "delete_message",
-        "add_session", "change_session", "delete_session",
-        "add_migrationhistory", "change_migrationhistory", "delete_migrationhistory",
-        "add_version", "change_version", "delete_version",
-        "add_revision", "change_revision", "delete_revision",
-        "add_user", "delete_user",
-        "add_project",
-    ]
-
-    def get_queryset(self):
-        return Permission.objects.exclude(codename__in=self.excluded_codenames)
-
 
 class UsersViewSet(ModelCrudViewSet):
     permission_classes = (IsAuthenticated,)
diff --git a/taiga/users/fixtures/initial_user.json b/taiga/users/fixtures/initial_user.json
index 4381031f..459fcc3f 100644
--- a/taiga/users/fixtures/initial_user.json
+++ b/taiga/users/fixtures/initial_user.json
@@ -4,9 +4,8 @@
         "model": "users.user",
         "fields": {
             "username": "admin",
-            "first_name": "",
-            "last_name": "",
-            "description": "",
+            "full_name": "",
+            "bio": "",
             "default_language": "",
             "color": "",
             "photo": "",
@@ -15,10 +14,8 @@
             "default_timezone": "",
             "is_superuser": true,
             "token": "",
-            "is_staff": true,
+            "github_id": null,
             "last_login": "2013-04-04T07:36:09.880Z",
-            "groups": [],
-            "user_permissions": [],
             "password": "pbkdf2_sha256$10000$oRIbCKOL1U3w$/gaYMnOlc/GnN4mn3UUXvXpk2Hx0vvht6Uqhu46aikI=",
             "email": "niwi@niwi.be",
             "date_joined": "2013-04-01T13:48:21.711Z"
diff --git a/taiga/users/migrations/0005_auto__del_field_user_first_name__del_field_user_last_name__del_field_u.py b/taiga/users/migrations/0005_auto__del_field_user_first_name__del_field_user_last_name__del_field_u.py
new file mode 100644
index 00000000..052d6c44
--- /dev/null
+++ b/taiga/users/migrations/0005_auto__del_field_user_first_name__del_field_user_last_name__del_field_u.py
@@ -0,0 +1,282 @@
+# -*- coding: utf-8 -*-
+from south.utils import datetime_utils as datetime
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        # Deleting field 'User.notify_changes_by_me'
+        db.delete_column('users_user', 'notify_changes_by_me')
+
+        # Deleting field 'User.notify_level'
+        db.delete_column('users_user', 'notify_level')
+
+        # Deleting field 'User.is_staff'
+        db.delete_column('users_user', 'is_staff')
+
+
+        # Adding field 'User.github_id'
+        db.add_column('users_user', 'github_id',
+                      self.gf('django.db.models.fields.IntegerField')(null=True, blank=True),
+                      keep_default=False)
+
+        # Removing M2M table for field groups on 'User'
+        db.delete_table(db.shorten_name('users_user_groups'))
+
+        # Removing M2M table for field user_permissions on 'User'
+        db.delete_table(db.shorten_name('users_user_user_permissions'))
+
+        # Adding field 'User.full_name'
+        db.add_column('users_user', 'full_name',
+                      self.gf('django.db.models.fields.CharField')(default='', max_length=256, blank=True),
+                      keep_default=False)
+
+        #Copy first_name and last_name into full_name
+        for user in orm.Users.exclude(first_name="", last_name=""):
+            if user.first_name and user.last_name:
+                user.full_name = "{} {}".format(user.first_name, user.last_name)
+            elif not user.last_name:
+                user.full_name = user.first_name
+            else:
+                user.full_name = user.last_name
+            user.save()
+
+        # Deleting field 'User.first_name'
+        db.delete_column('users_user', 'first_name')
+
+        # Deleting field 'User.last_name'
+        db.delete_column('users_user', 'last_name')
+
+    def backwards(self, orm):
+        # Adding field 'User.notify_changes_by_me'
+        db.add_column('users_user', 'notify_changes_by_me',
+                      self.gf('django.db.models.fields.BooleanField')(default=False),
+                      keep_default=False)
+
+        # Adding field 'User.notify_level'
+        db.add_column('users_user', 'notify_level',
+                      self.gf('django.db.models.fields.CharField')(default='all_owned_projects', max_length=32),
+                      keep_default=False)
+
+        # Deleting field 'User.github_id'
+        db.delete_column('users_user', 'github_id')
+
+        # Adding M2M table for field groups on 'User'
+        m2m_table_name = db.shorten_name('users_user_groups')
+        db.create_table(m2m_table_name, (
+            ('id', models.AutoField(verbose_name='ID', primary_key=True, auto_created=True)),
+            ('user', models.ForeignKey(orm['users.user'], null=False)),
+            ('group', models.ForeignKey(orm['auth.group'], null=False))
+        ))
+        db.create_unique(m2m_table_name, ['user_id', 'group_id'])
+
+        # Adding M2M table for field user_permissions on 'User'
+        m2m_table_name = db.shorten_name('users_user_user_permissions')
+        db.create_table(m2m_table_name, (
+            ('id', models.AutoField(verbose_name='ID', primary_key=True, auto_created=True)),
+            ('user', models.ForeignKey(orm['users.user'], null=False)),
+            ('permission', models.ForeignKey(orm['auth.permission'], null=False))
+        ))
+        db.create_unique(m2m_table_name, ['user_id', 'permission_id'])
+
+        # Adding field 'User.first_name'
+        db.add_column('users_user', 'first_name',
+                      self.gf('django.db.models.fields.CharField')(default='', max_length=30, blank=True),
+                      keep_default=False)
+
+        # Adding field 'User.last_name'
+        db.add_column('users_user', 'last_name',
+                      self.gf('django.db.models.fields.CharField')(default='', max_length=30, blank=True),
+                      keep_default=False)
+
+        #Copy full_name into first_name and last_name
+        for user in orm.Users.exclude(full_name=""):
+            first_name, last_name = user.full_name.split(maxsplit=1)
+
+            user.first_name = first_name[:30]
+            user.last_name = last_name[:30]
+            user.save()
+
+        # Deleting field 'User.full_name'
+        db.delete_column('users_user', 'full_name')
+
+        # Adding field 'User.is_staff'
+        db.add_column('users_user', 'is_staff',
+                      self.gf('django.db.models.fields.BooleanField')(default=False),
+                      keep_default=False)
+
+    models = {
+        'auth.permission': {
+            'Meta': {'unique_together': "(('content_type', 'codename'),)", 'ordering': "('content_type__app_label', 'content_type__model', 'codename')", 'object_name': 'Permission'},
+            'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        'contenttypes.contenttype': {
+            'Meta': {'db_table': "'django_content_type'", 'ordering': "('name',)", 'object_name': 'ContentType', 'unique_together': "(('app_label', 'model'),)"},
+            'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+        },
+        'projects.issuestatus': {
+            'Meta': {'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']", 'object_name': 'IssueStatus'},
+            'color': ('django.db.models.fields.CharField', [], {'default': "'#999999'", 'max_length': '20'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_closed': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['projects.Project']", 'related_name': "'issue_statuses'"})
+        },
+        'projects.issuetype': {
+            'Meta': {'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']", 'object_name': 'IssueType'},
+            'color': ('django.db.models.fields.CharField', [], {'default': "'#999999'", 'max_length': '20'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['projects.Project']", 'related_name': "'issue_types'"})
+        },
+        'projects.membership': {
+            'Meta': {'unique_together': "(('user', 'project'),)", 'ordering': "['project', 'role']", 'object_name': 'Membership'},
+            'created_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now', 'blank': 'True', 'auto_now_add': 'True'}),
+            'email': ('django.db.models.fields.EmailField', [], {'default': 'None', 'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['projects.Project']", 'related_name': "'memberships'"}),
+            'role': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['users.Role']", 'related_name': "'memberships'"}),
+            'token': ('django.db.models.fields.CharField', [], {'default': 'None', 'max_length': '60', 'null': 'True', 'blank': 'True'}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': "orm['users.User']", 'null': 'True', 'blank': 'True', 'related_name': "'memberships'"})
+        },
+        'projects.points': {
+            'Meta': {'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']", 'object_name': 'Points'},
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['projects.Project']", 'related_name': "'points'"}),
+            'value': ('django.db.models.fields.FloatField', [], {'default': 'None', 'null': 'True', 'blank': 'True'})
+        },
+        'projects.priority': {
+            'Meta': {'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']", 'object_name': 'Priority'},
+            'color': ('django.db.models.fields.CharField', [], {'default': "'#999999'", 'max_length': '20'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['projects.Project']", 'related_name': "'priorities'"})
+        },
+        'projects.project': {
+            'Meta': {'ordering': "['name']", 'object_name': 'Project'},
+            'created_date': ('django.db.models.fields.DateTimeField', [], {'blank': 'True', 'auto_now_add': 'True'}),
+            'creation_template': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'to': "orm['projects.ProjectTemplate']", 'null': 'True', 'blank': 'True', 'related_name': "'projects'"}),
+            'default_issue_status': ('django.db.models.fields.related.OneToOneField', [], {'to': "orm['projects.IssueStatus']", 'on_delete': 'models.SET_NULL', 'unique': 'True', 'blank': 'True', 'null': 'True', 'related_name': "'+'"}),
+            'default_issue_type': ('django.db.models.fields.related.OneToOneField', [], {'to': "orm['projects.IssueType']", 'on_delete': 'models.SET_NULL', 'unique': 'True', 'blank': 'True', 'null': 'True', 'related_name': "'+'"}),
+            'default_points': ('django.db.models.fields.related.OneToOneField', [], {'to': "orm['projects.Points']", 'on_delete': 'models.SET_NULL', 'unique': 'True', 'blank': 'True', 'null': 'True', 'related_name': "'+'"}),
+            'default_priority': ('django.db.models.fields.related.OneToOneField', [], {'to': "orm['projects.Priority']", 'on_delete': 'models.SET_NULL', 'unique': 'True', 'blank': 'True', 'null': 'True', 'related_name': "'+'"}),
+            'default_severity': ('django.db.models.fields.related.OneToOneField', [], {'to': "orm['projects.Severity']", 'on_delete': 'models.SET_NULL', 'unique': 'True', 'blank': 'True', 'null': 'True', 'related_name': "'+'"}),
+            'default_task_status': ('django.db.models.fields.related.OneToOneField', [], {'to': "orm['projects.TaskStatus']", 'on_delete': 'models.SET_NULL', 'unique': 'True', 'blank': 'True', 'null': 'True', 'related_name': "'+'"}),
+            'default_us_status': ('django.db.models.fields.related.OneToOneField', [], {'to': "orm['projects.UserStoryStatus']", 'on_delete': 'models.SET_NULL', 'unique': 'True', 'blank': 'True', 'null': 'True', 'related_name': "'+'"}),
+            'description': ('django.db.models.fields.TextField', [], {}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_backlog_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_issues_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_kanban_activated': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_wiki_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'members': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['users.User']", 'through': "orm['projects.Membership']", 'symmetrical': 'False', 'related_name': "'projects'"}),
+            'modified_date': ('django.db.models.fields.DateTimeField', [], {'blank': 'True', 'auto_now': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '250', 'unique': 'True'}),
+            'owner': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['users.User']", 'related_name': "'owned_projects'"}),
+            'public': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'slug': ('django.db.models.fields.SlugField', [], {'max_length': '250', 'unique': 'True', 'blank': 'True'}),
+            'tags': ('picklefield.fields.PickledObjectField', [], {'blank': 'True'}),
+            'total_milestones': ('django.db.models.fields.IntegerField', [], {'default': '0', 'null': 'True', 'blank': 'True'}),
+            'total_story_points': ('django.db.models.fields.FloatField', [], {'default': 'None', 'null': 'True'}),
+            'videoconferences': ('django.db.models.fields.CharField', [], {'max_length': '250', 'null': 'True', 'blank': 'True'}),
+            'videoconferences_salt': ('django.db.models.fields.CharField', [], {'max_length': '250', 'null': 'True', 'blank': 'True'})
+        },
+        'projects.projecttemplate': {
+            'Meta': {'ordering': "['name']", 'object_name': 'ProjectTemplate'},
+            'created_date': ('django.db.models.fields.DateTimeField', [], {'blank': 'True', 'auto_now_add': 'True'}),
+            'default_options': ('django_pgjson.fields.JsonField', [], {}),
+            'default_owner_role': ('django.db.models.fields.CharField', [], {'max_length': '50'}),
+            'description': ('django.db.models.fields.TextField', [], {}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_backlog_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_issues_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_kanban_activated': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_wiki_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'issue_statuses': ('django_pgjson.fields.JsonField', [], {}),
+            'issue_types': ('django_pgjson.fields.JsonField', [], {}),
+            'modified_date': ('django.db.models.fields.DateTimeField', [], {'blank': 'True', 'auto_now': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '250'}),
+            'points': ('django_pgjson.fields.JsonField', [], {}),
+            'priorities': ('django_pgjson.fields.JsonField', [], {}),
+            'roles': ('django_pgjson.fields.JsonField', [], {}),
+            'severities': ('django_pgjson.fields.JsonField', [], {}),
+            'slug': ('django.db.models.fields.SlugField', [], {'max_length': '250', 'unique': 'True', 'blank': 'True'}),
+            'task_statuses': ('django_pgjson.fields.JsonField', [], {}),
+            'us_statuses': ('django_pgjson.fields.JsonField', [], {}),
+            'videoconferences': ('django.db.models.fields.CharField', [], {'max_length': '250', 'null': 'True', 'blank': 'True'}),
+            'videoconferences_salt': ('django.db.models.fields.CharField', [], {'max_length': '250', 'null': 'True', 'blank': 'True'})
+        },
+        'projects.severity': {
+            'Meta': {'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']", 'object_name': 'Severity'},
+            'color': ('django.db.models.fields.CharField', [], {'default': "'#999999'", 'max_length': '20'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['projects.Project']", 'related_name': "'severities'"})
+        },
+        'projects.taskstatus': {
+            'Meta': {'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']", 'object_name': 'TaskStatus'},
+            'color': ('django.db.models.fields.CharField', [], {'default': "'#999999'", 'max_length': '20'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_closed': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['projects.Project']", 'related_name': "'task_statuses'"})
+        },
+        'projects.userstorystatus': {
+            'Meta': {'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']", 'object_name': 'UserStoryStatus'},
+            'color': ('django.db.models.fields.CharField', [], {'default': "'#999999'", 'max_length': '20'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_closed': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['projects.Project']", 'related_name': "'us_statuses'"}),
+            'wip_limit': ('django.db.models.fields.IntegerField', [], {'default': 'None', 'null': 'True', 'blank': 'True'})
+        },
+        'users.role': {
+            'Meta': {'unique_together': "(('slug', 'project'),)", 'ordering': "['order', 'slug']", 'object_name': 'Role'},
+            'computable': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '200'}),
+            'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
+            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'related_name': "'roles'"}),
+            'project': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['projects.Project']", 'related_name': "'roles'"}),
+            'slug': ('django.db.models.fields.SlugField', [], {'max_length': '250', 'blank': 'True'})
+        },
+        'users.user': {
+            'Meta': {'ordering': "['username']", 'object_name': 'User'},
+            'color': ('django.db.models.fields.CharField', [], {'default': "'#be719b'", 'max_length': '9', 'blank': 'True'}),
+            'colorize_tags': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'default_language': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '20', 'blank': 'True'}),
+            'default_timezone': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '20', 'blank': 'True'}),
+            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
+            'full_name': ('django.db.models.fields.CharField', [], {'max_length': '256', 'blank': 'True'}),
+            'github_id': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
+            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'photo': ('django.db.models.fields.files.FileField', [], {'max_length': '500', 'null': 'True', 'blank': 'True'}),
+            'token': ('django.db.models.fields.CharField', [], {'default': 'None', 'max_length': '200', 'null': 'True', 'blank': 'True'}),
+            'username': ('django.db.models.fields.CharField', [], {'max_length': '30', 'unique': 'True'})
+        }
+    }
+
+    complete_apps = ['users']
diff --git a/taiga/users/migrations/0005_auto__del_field_user_notify_changes_by_me__del_field_user_notify_level.py b/taiga/users/migrations/0006_rename_description_to_bio.py
similarity index 67%
rename from taiga/users/migrations/0005_auto__del_field_user_notify_changes_by_me__del_field_user_notify_level.py
rename to taiga/users/migrations/0006_rename_description_to_bio.py
index df2c84dd..fff41c74 100644
--- a/taiga/users/migrations/0005_auto__del_field_user_notify_changes_by_me__del_field_user_notify_level.py
+++ b/taiga/users/migrations/0006_rename_description_to_bio.py
@@ -8,48 +8,28 @@ from django.db import models
 class Migration(SchemaMigration):
 
     def forwards(self, orm):
-        # Deleting field 'User.notify_changes_by_me'
-        db.delete_column('users_user', 'notify_changes_by_me')
-
-        # Deleting field 'User.notify_level'
-        db.delete_column('users_user', 'notify_level')
-
+        db.rename_column(u'users_user', 'description', 'bio')
 
     def backwards(self, orm):
-        # Adding field 'User.notify_changes_by_me'
-        db.add_column('users_user', 'notify_changes_by_me',
-                      self.gf('django.db.models.fields.BooleanField')(default=False),
-                      keep_default=False)
-
-        # Adding field 'User.notify_level'
-        db.add_column('users_user', 'notify_level',
-                      self.gf('django.db.models.fields.CharField')(default='all_owned_projects', max_length=32),
-                      keep_default=False)
-
+        db.rename_column(u'users_user', 'bio', 'description')
 
     models = {
-        'auth.group': {
-            'Meta': {'object_name': 'Group'},
-            'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
-            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
-            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'to': "orm['auth.Permission']", 'blank': 'True'})
-        },
         'auth.permission': {
-            'Meta': {'object_name': 'Permission', 'unique_together': "(('content_type', 'codename'),)", 'ordering': "('content_type__app_label', 'content_type__model', 'codename')"},
+            'Meta': {'unique_together': "(('content_type', 'codename'),)", 'object_name': 'Permission', 'ordering': "('content_type__app_label', 'content_type__model', 'codename')"},
             'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
             'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
         },
         'contenttypes.contenttype': {
-            'Meta': {'db_table': "'django_content_type'", 'object_name': 'ContentType', 'unique_together': "(('app_label', 'model'),)", 'ordering': "('name',)"},
+            'Meta': {'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'ordering': "('name',)", 'db_table': "'django_content_type'"},
             'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
             'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
         },
         'projects.issuestatus': {
-            'Meta': {'object_name': 'IssueStatus', 'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']"},
+            'Meta': {'unique_together': "(('project', 'name'),)", 'object_name': 'IssueStatus', 'ordering': "['project', 'order', 'name']"},
             'color': ('django.db.models.fields.CharField', [], {'default': "'#999999'", 'max_length': '20'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'is_closed': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
@@ -58,7 +38,7 @@ class Migration(SchemaMigration):
             'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'issue_statuses'", 'to': "orm['projects.Project']"})
         },
         'projects.issuetype': {
-            'Meta': {'object_name': 'IssueType', 'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']"},
+            'Meta': {'unique_together': "(('project', 'name'),)", 'object_name': 'IssueType', 'ordering': "['project', 'order', 'name']"},
             'color': ('django.db.models.fields.CharField', [], {'default': "'#999999'", 'max_length': '20'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
@@ -66,17 +46,17 @@ class Migration(SchemaMigration):
             'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'issue_types'", 'to': "orm['projects.Project']"})
         },
         'projects.membership': {
-            'Meta': {'object_name': 'Membership', 'unique_together': "(('user', 'project'),)", 'ordering': "['project', 'role']"},
-            'created_at': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'default': 'datetime.datetime.now', 'blank': 'True'}),
-            'email': ('django.db.models.fields.EmailField', [], {'default': 'None', 'max_length': '255', 'null': 'True', 'blank': 'True'}),
+            'Meta': {'unique_together': "(('user', 'project'),)", 'object_name': 'Membership', 'ordering': "['project', 'role']"},
+            'created_at': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now', 'blank': 'True', 'auto_now_add': 'True'}),
+            'email': ('django.db.models.fields.EmailField', [], {'default': 'None', 'null': 'True', 'blank': 'True', 'max_length': '255'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'memberships'", 'to': "orm['projects.Project']"}),
             'role': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'memberships'", 'to': "orm['users.Role']"}),
-            'token': ('django.db.models.fields.CharField', [], {'default': 'None', 'max_length': '60', 'null': 'True', 'blank': 'True'}),
-            'user': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'memberships'", 'to': "orm['users.User']", 'null': 'True', 'blank': 'True'})
+            'token': ('django.db.models.fields.CharField', [], {'default': 'None', 'null': 'True', 'blank': 'True', 'max_length': '60'}),
+            'user': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'memberships'", 'null': 'True', 'blank': 'True', 'to': "orm['users.User']"})
         },
         'projects.points': {
-            'Meta': {'object_name': 'Points', 'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']"},
+            'Meta': {'unique_together': "(('project', 'name'),)", 'object_name': 'Points', 'ordering': "['project', 'order', 'name']"},
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
             'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
@@ -84,7 +64,7 @@ class Migration(SchemaMigration):
             'value': ('django.db.models.fields.FloatField', [], {'default': 'None', 'null': 'True', 'blank': 'True'})
         },
         'projects.priority': {
-            'Meta': {'object_name': 'Priority', 'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']"},
+            'Meta': {'unique_together': "(('project', 'name'),)", 'object_name': 'Priority', 'ordering': "['project', 'order', 'name']"},
             'color': ('django.db.models.fields.CharField', [], {'default': "'#999999'", 'max_length': '20'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
@@ -93,36 +73,36 @@ class Migration(SchemaMigration):
         },
         'projects.project': {
             'Meta': {'object_name': 'Project', 'ordering': "['name']"},
-            'created_date': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
-            'creation_template': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'projects'", 'to': "orm['projects.ProjectTemplate']", 'null': 'True', 'blank': 'True'}),
-            'default_issue_status': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'to': "orm['projects.IssueStatus']", 'blank': 'True', 'unique': 'True', 'on_delete': 'models.SET_NULL', 'null': 'True'}),
-            'default_issue_type': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'to': "orm['projects.IssueType']", 'blank': 'True', 'unique': 'True', 'on_delete': 'models.SET_NULL', 'null': 'True'}),
-            'default_points': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'to': "orm['projects.Points']", 'blank': 'True', 'unique': 'True', 'on_delete': 'models.SET_NULL', 'null': 'True'}),
-            'default_priority': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'to': "orm['projects.Priority']", 'blank': 'True', 'unique': 'True', 'on_delete': 'models.SET_NULL', 'null': 'True'}),
-            'default_severity': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'to': "orm['projects.Severity']", 'blank': 'True', 'unique': 'True', 'on_delete': 'models.SET_NULL', 'null': 'True'}),
-            'default_task_status': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'to': "orm['projects.TaskStatus']", 'blank': 'True', 'unique': 'True', 'on_delete': 'models.SET_NULL', 'null': 'True'}),
-            'default_us_status': ('django.db.models.fields.related.OneToOneField', [], {'related_name': "'+'", 'to': "orm['projects.UserStoryStatus']", 'blank': 'True', 'unique': 'True', 'on_delete': 'models.SET_NULL', 'null': 'True'}),
+            'created_date': ('django.db.models.fields.DateTimeField', [], {'blank': 'True', 'auto_now_add': 'True'}),
+            'creation_template': ('django.db.models.fields.related.ForeignKey', [], {'default': 'None', 'related_name': "'projects'", 'null': 'True', 'blank': 'True', 'to': "orm['projects.ProjectTemplate']"}),
+            'default_issue_status': ('django.db.models.fields.related.OneToOneField', [], {'blank': 'True', 'to': "orm['projects.IssueStatus']", 'related_name': "'+'", 'null': 'True', 'on_delete': 'models.SET_NULL', 'unique': 'True'}),
+            'default_issue_type': ('django.db.models.fields.related.OneToOneField', [], {'blank': 'True', 'to': "orm['projects.IssueType']", 'related_name': "'+'", 'null': 'True', 'on_delete': 'models.SET_NULL', 'unique': 'True'}),
+            'default_points': ('django.db.models.fields.related.OneToOneField', [], {'blank': 'True', 'to': "orm['projects.Points']", 'related_name': "'+'", 'null': 'True', 'on_delete': 'models.SET_NULL', 'unique': 'True'}),
+            'default_priority': ('django.db.models.fields.related.OneToOneField', [], {'blank': 'True', 'to': "orm['projects.Priority']", 'related_name': "'+'", 'null': 'True', 'on_delete': 'models.SET_NULL', 'unique': 'True'}),
+            'default_severity': ('django.db.models.fields.related.OneToOneField', [], {'blank': 'True', 'to': "orm['projects.Severity']", 'related_name': "'+'", 'null': 'True', 'on_delete': 'models.SET_NULL', 'unique': 'True'}),
+            'default_task_status': ('django.db.models.fields.related.OneToOneField', [], {'blank': 'True', 'to': "orm['projects.TaskStatus']", 'related_name': "'+'", 'null': 'True', 'on_delete': 'models.SET_NULL', 'unique': 'True'}),
+            'default_us_status': ('django.db.models.fields.related.OneToOneField', [], {'blank': 'True', 'to': "orm['projects.UserStoryStatus']", 'related_name': "'+'", 'null': 'True', 'on_delete': 'models.SET_NULL', 'unique': 'True'}),
             'description': ('django.db.models.fields.TextField', [], {}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'is_backlog_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
             'is_issues_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
             'is_kanban_activated': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
             'is_wiki_activated': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
-            'members': ('django.db.models.fields.related.ManyToManyField', [], {'through': "orm['projects.Membership']", 'related_name': "'projects'", 'to': "orm['users.User']", 'symmetrical': 'False'}),
+            'members': ('django.db.models.fields.related.ManyToManyField', [], {'through': "orm['projects.Membership']", 'to': "orm['users.User']", 'symmetrical': 'False', 'related_name': "'projects'"}),
             'modified_date': ('django.db.models.fields.DateTimeField', [], {'blank': 'True', 'auto_now': 'True'}),
-            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '250'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '250', 'unique': 'True'}),
             'owner': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'owned_projects'", 'to': "orm['users.User']"}),
             'public': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
-            'slug': ('django.db.models.fields.SlugField', [], {'unique': 'True', 'max_length': '250', 'blank': 'True'}),
+            'slug': ('django.db.models.fields.SlugField', [], {'max_length': '250', 'blank': 'True', 'unique': 'True'}),
             'tags': ('picklefield.fields.PickledObjectField', [], {'blank': 'True'}),
             'total_milestones': ('django.db.models.fields.IntegerField', [], {'default': '0', 'null': 'True', 'blank': 'True'}),
             'total_story_points': ('django.db.models.fields.FloatField', [], {'default': 'None', 'null': 'True'}),
-            'videoconferences': ('django.db.models.fields.CharField', [], {'max_length': '250', 'null': 'True', 'blank': 'True'}),
-            'videoconferences_salt': ('django.db.models.fields.CharField', [], {'max_length': '250', 'null': 'True', 'blank': 'True'})
+            'videoconferences': ('django.db.models.fields.CharField', [], {'null': 'True', 'blank': 'True', 'max_length': '250'}),
+            'videoconferences_salt': ('django.db.models.fields.CharField', [], {'null': 'True', 'blank': 'True', 'max_length': '250'})
         },
         'projects.projecttemplate': {
             'Meta': {'object_name': 'ProjectTemplate', 'ordering': "['name']"},
-            'created_date': ('django.db.models.fields.DateTimeField', [], {'auto_now_add': 'True', 'blank': 'True'}),
+            'created_date': ('django.db.models.fields.DateTimeField', [], {'blank': 'True', 'auto_now_add': 'True'}),
             'default_options': ('django_pgjson.fields.JsonField', [], {}),
             'default_owner_role': ('django.db.models.fields.CharField', [], {'max_length': '50'}),
             'description': ('django.db.models.fields.TextField', [], {}),
@@ -139,14 +119,14 @@ class Migration(SchemaMigration):
             'priorities': ('django_pgjson.fields.JsonField', [], {}),
             'roles': ('django_pgjson.fields.JsonField', [], {}),
             'severities': ('django_pgjson.fields.JsonField', [], {}),
-            'slug': ('django.db.models.fields.SlugField', [], {'unique': 'True', 'max_length': '250', 'blank': 'True'}),
+            'slug': ('django.db.models.fields.SlugField', [], {'max_length': '250', 'blank': 'True', 'unique': 'True'}),
             'task_statuses': ('django_pgjson.fields.JsonField', [], {}),
             'us_statuses': ('django_pgjson.fields.JsonField', [], {}),
-            'videoconferences': ('django.db.models.fields.CharField', [], {'max_length': '250', 'null': 'True', 'blank': 'True'}),
-            'videoconferences_salt': ('django.db.models.fields.CharField', [], {'max_length': '250', 'null': 'True', 'blank': 'True'})
+            'videoconferences': ('django.db.models.fields.CharField', [], {'null': 'True', 'blank': 'True', 'max_length': '250'}),
+            'videoconferences_salt': ('django.db.models.fields.CharField', [], {'null': 'True', 'blank': 'True', 'max_length': '250'})
         },
         'projects.severity': {
-            'Meta': {'object_name': 'Severity', 'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']"},
+            'Meta': {'unique_together': "(('project', 'name'),)", 'object_name': 'Severity', 'ordering': "['project', 'order', 'name']"},
             'color': ('django.db.models.fields.CharField', [], {'default': "'#999999'", 'max_length': '20'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'name': ('django.db.models.fields.CharField', [], {'max_length': '255'}),
@@ -154,7 +134,7 @@ class Migration(SchemaMigration):
             'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'severities'", 'to': "orm['projects.Project']"})
         },
         'projects.taskstatus': {
-            'Meta': {'object_name': 'TaskStatus', 'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']"},
+            'Meta': {'unique_together': "(('project', 'name'),)", 'object_name': 'TaskStatus', 'ordering': "['project', 'order', 'name']"},
             'color': ('django.db.models.fields.CharField', [], {'default': "'#999999'", 'max_length': '20'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'is_closed': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
@@ -163,7 +143,7 @@ class Migration(SchemaMigration):
             'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'task_statuses'", 'to': "orm['projects.Project']"})
         },
         'projects.userstorystatus': {
-            'Meta': {'object_name': 'UserStoryStatus', 'unique_together': "(('project', 'name'),)", 'ordering': "['project', 'order', 'name']"},
+            'Meta': {'unique_together': "(('project', 'name'),)", 'object_name': 'UserStoryStatus', 'ordering': "['project', 'order', 'name']"},
             'color': ('django.db.models.fields.CharField', [], {'default': "'#999999'", 'max_length': '20'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'is_closed': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
@@ -173,38 +153,37 @@ class Migration(SchemaMigration):
             'wip_limit': ('django.db.models.fields.IntegerField', [], {'default': 'None', 'null': 'True', 'blank': 'True'})
         },
         'users.role': {
-            'Meta': {'object_name': 'Role', 'unique_together': "(('slug', 'project'),)", 'ordering': "['order', 'slug']"},
+            'Meta': {'unique_together': "(('slug', 'project'),)", 'object_name': 'Role', 'ordering': "['order', 'slug']"},
             'computable': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'name': ('django.db.models.fields.CharField', [], {'max_length': '200'}),
             'order': ('django.db.models.fields.IntegerField', [], {'default': '10'}),
             'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'roles'", 'to': "orm['auth.Permission']", 'symmetrical': 'False'}),
             'project': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'roles'", 'to': "orm['projects.Project']"}),
-            'slug': ('django.db.models.fields.SlugField', [], {'max_length': '250', 'blank': 'True'})
+            'slug': ('django.db.models.fields.SlugField', [], {'blank': 'True', 'max_length': '250'})
         },
         'users.user': {
             'Meta': {'object_name': 'User', 'ordering': "['username']"},
-            'color': ('django.db.models.fields.CharField', [], {'default': "'#e6748a'", 'max_length': '9', 'blank': 'True'}),
+            'bio': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
+            'color': ('django.db.models.fields.CharField', [], {'default': "'#f18e35'", 'blank': 'True', 'max_length': '9'}),
             'colorize_tags': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
             'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
-            'default_language': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '20', 'blank': 'True'}),
-            'default_timezone': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '20', 'blank': 'True'}),
-            'description': ('django.db.models.fields.TextField', [], {'blank': 'True'}),
-            'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}),
-            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
-            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'user_set'", 'to': "orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}),
+            'default_language': ('django.db.models.fields.CharField', [], {'default': "''", 'blank': 'True', 'max_length': '20'}),
+            'default_timezone': ('django.db.models.fields.CharField', [], {'default': "''", 'blank': 'True', 'max_length': '20'}),
+            'email': ('django.db.models.fields.EmailField', [], {'blank': 'True', 'max_length': '75'}),
+            'full_name': ('django.db.models.fields.CharField', [], {'blank': 'True', 'max_length': '256'}),
+            'github_id': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
             'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
             'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
-            'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
             'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
             'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
-            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'notify_changes_by_me': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'notify_level': ('django.db.models.fields.CharField', [], {'default': "'all_owned_projects'", 'max_length': '32'}),
             'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
-            'photo': ('django.db.models.fields.files.FileField', [], {'max_length': '500', 'null': 'True', 'blank': 'True'}),
-            'token': ('django.db.models.fields.CharField', [], {'default': 'None', 'max_length': '200', 'null': 'True', 'blank': 'True'}),
-            'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'related_name': "'user_set'", 'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}),
-            'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'})
+            'photo': ('django.db.models.fields.files.FileField', [], {'null': 'True', 'blank': 'True', 'max_length': '500'}),
+            'token': ('django.db.models.fields.CharField', [], {'default': 'None', 'null': 'True', 'blank': 'True', 'max_length': '200'}),
+            'username': ('django.db.models.fields.CharField', [], {'max_length': '30', 'unique': 'True'})
         }
     }
 
-    complete_apps = ['users']
\ No newline at end of file
+    complete_apps = ['users']
diff --git a/taiga/users/models.py b/taiga/users/models.py
index 99ee552c..d8f5f336 100644
--- a/taiga/users/models.py
+++ b/taiga/users/models.py
@@ -17,32 +17,83 @@
 from django.db import models
 from django.dispatch import receiver
 from django.utils.translation import ugettext_lazy as _
-from django.contrib.auth.models import UserManager, AbstractUser
+from django.contrib.auth.models import UserManager, AbstractBaseUser
+from django.core import validators
+from django.utils import timezone
 
 from taiga.base.utils.slug import slugify_uniquely
 
 import random
+import re
 
 
 def generate_random_hex_color():
     return "#{:06x}".format(random.randint(0,0xFFFFFF))
 
 
-class User(AbstractUser):
+class PermissionsMixin(models.Model):
+    """
+    A mixin class that adds the fields and methods necessary to support
+    Django's Permission model using the ModelBackend.
+    """
+    is_superuser = models.BooleanField(_('superuser status'), default=False,
+        help_text=_('Designates that this user has all permissions without '
+                    'explicitly assigning them.'))
+
+    class Meta:
+        abstract = True
+
+    def has_perm(self, perm, obj=None):
+        """
+        Returns True if the user is superadmin and is active
+        """
+        return self.is_active and self.is_superuser
+
+    def has_perms(self, perm_list, obj=None):
+        """
+        Returns True if the user is superadmin and is active
+        """
+        return self.is_active and self.is_superuser
+
+    def has_module_perms(self, app_label):
+        """
+        Returns True if the user is superadmin and is active
+        """
+        return self.is_active and self.is_superuser
+
+
+class User(AbstractBaseUser, PermissionsMixin):
+    username = models.CharField(_('username'), max_length=30, unique=True,
+        help_text=_('Required. 30 characters or fewer. Letters, numbers and '
+                    '/./-/_ characters'),
+        validators=[
+            validators.RegexValidator(re.compile('^[\w.-]+$'), _('Enter a valid username.'), 'invalid')
+        ])
+    email = models.EmailField(_('email address'), blank=True)
+    is_active = models.BooleanField(_('active'), default=True,
+        help_text=_('Designates whether this user should be treated as '
+                    'active. Unselect this instead of deleting accounts.'))
+
+    full_name = models.CharField(_('full name'), max_length=256, blank=True)
     color = models.CharField(max_length=9, null=False, blank=True, default=generate_random_hex_color,
                              verbose_name=_("color"))
-    description = models.TextField(null=False, blank=True,
-                                   verbose_name=_("description"))
-    photo = models.FileField(upload_to="files/msg", max_length=500, null=True, blank=True,
+    bio = models.TextField(null=False, blank=True, default="", verbose_name=_("biography"))
+    photo = models.FileField(upload_to="users/photo", max_length=500, null=True, blank=True,
                              verbose_name=_("photo"))
+    date_joined = models.DateTimeField(_('date joined'), default=timezone.now)
     default_language = models.CharField(max_length=20, null=False, blank=True, default="",
                                         verbose_name=_("default language"))
     default_timezone = models.CharField(max_length=20, null=False, blank=True, default="",
                                         verbose_name=_("default timezone"))
-    token = models.CharField(max_length=200, null=True, blank=True, default=None,
-                             verbose_name=_("token"))
     colorize_tags = models.BooleanField(null=False, blank=True, default=False,
                                         verbose_name=_("colorize tags"))
+    token = models.CharField(max_length=200, null=True, blank=True, default=None,
+                             verbose_name=_("token"))
+    github_id = models.IntegerField(null=True, blank=True, verbose_name=_("github ID"))
+
+    USERNAME_FIELD = 'username'
+    REQUIRED_FIELDS = ['email']
+
     objects = UserManager()
 
     class Meta:
@@ -56,8 +107,12 @@ class User(AbstractUser):
     def __str__(self):
         return self.get_full_name()
 
+    def get_short_name(self):
+        "Returns the short name for the user."
+        return self.username
+
     def get_full_name(self):
-        return super().get_full_name() or self.username or self.email
+        return self.full_name or self.username or self.email
 
 
 class Role(models.Model):
@@ -104,4 +159,3 @@ def role_post_save(sender, instance, created, **kwargs):
     unique_projects = set(map(lambda x: x.project, instance.memberships.all()))
     for project in unique_projects:
         project.update_role_points()
-
diff --git a/taiga/users/serializers.py b/taiga/users/serializers.py
index 7a4e09de..58d40489 100644
--- a/taiga/users/serializers.py
+++ b/taiga/users/serializers.py
@@ -15,7 +15,6 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from django.utils.translation import ugettext_lazy as _
-from django.contrib.auth.models import Permission
 
 from rest_framework import serializers
 
@@ -23,20 +22,12 @@ from taiga.projects.models import Project
 from .models import User, Role
 
 
-class PermissionSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = Permission
-        fields = ("id", "name", "codename")
-
-
 class UserSerializer(serializers.ModelSerializer):
-    full_name = serializers.CharField(source="get_full_name", required=False)
-
     class Meta:
         model = User
-        fields = ("id", "username", "first_name", "last_name", "full_name", "email",
-                  "color", "description", "default_language", "default_timezone",
-                  "is_active", "photo",)
+        fields = ('id', 'username', 'full_name', 'email', 'github_id',
+                  'color', 'bio', 'default_language', 'default_timezone',
+                  'is_active', 'photo')
 
 
 class RecoverySerializer(serializers.Serializer):
diff --git a/taiga/users/services.py b/taiga/users/services.py
index decae640..a8349c58 100644
--- a/taiga/users/services.py
+++ b/taiga/users/services.py
@@ -19,12 +19,14 @@ This model contains a domain logic for users application.
 """
 
 from django.db.models.loading import get_model
+from django.db.models import Q
+
 from taiga.base import exceptions as exc
 
 
 def get_and_validate_user(*, username:str, password:str) -> bool:
     """
-    Check if user with username exists and specified
+    Check if user with username/email exists and specified
     password matchs well with existing user password.
 
     if user is valid,  user is returned else, corresponding
@@ -32,7 +34,8 @@ def get_and_validate_user(*, username:str, password:str) -> bool:
     """
 
     user_model = get_model("users", "User")
-    qs = user_model.objects.filter(username=username)
+    qs = user_model.objects.filter(Q(username=username) |
+                                   Q(email=username))
     if len(qs) == 0:
         raise exc.WrongArguments("Username or password does not matches user.")
 
diff --git a/taiga/users/tests/__init__.py b/taiga/users/tests/__init__.py
index faf2c90a..1a9dcfcb 100644
--- a/taiga/users/tests/__init__.py
+++ b/taiga/users/tests/__init__.py
@@ -25,8 +25,7 @@ def create_user(id, save=True, is_superuser=False):
     instance = model(
        username="user{0}".format(id),
        email="user{0}@taiga.io".format(id),
-       first_name="Foo{0}".format(id),
-       last_name="Bar{0}".format(id)
+       full_name="Foo{0} Bar{0}".format(id)
     )
 
     instance.set_password(instance.username)
@@ -46,14 +45,3 @@ def create_user(id, save=True, is_superuser=False):
         dm.save()
 
     return instance
-
-
-def create_domain(name, public_register=False):
-    domain_model = get_model("domains", "Domain")
-
-    instance = domain_model(name=name,
-                            domain=name,
-                            public_register=public_register)
-
-    instance.save()
-    return instance
diff --git a/tests/integration/test_auth_api.py b/tests/integration/test_auth_api.py
index fe1054c9..ec11aac6 100644
--- a/tests/integration/test_auth_api.py
+++ b/tests/integration/test_auth_api.py
@@ -1,8 +1,13 @@
 import pytest
+from unittest.mock import patch, Mock
 
+from django.db.models.loading import get_model
 from django.core.urlresolvers import reverse
 from .. import factories
 
+from taiga.base.connectors import github
+
+
 pytestmark = pytest.mark.django_db
 
 
@@ -10,8 +15,7 @@ pytestmark = pytest.mark.django_db
 def register_form():
     return {"username": "username",
             "password": "password",
-            "first_name": "fname",
-            "last_name": "lname",
+            "full_name": "fname",
             "email": "user@email.com",
             "type": "public"}
 
@@ -41,3 +45,59 @@ def test_respond_201_if_domain_allows_public_registration(client, register_form)
 
     response = client.post(reverse("auth-register"), register_form)
     assert response.status_code == 201
+
+
+def test_response_200_in_registration_with_github_account(client):
+    form = {"type": "github",
+            "code": "xxxxxx"}
+
+    with patch("taiga.base.connectors.github.me") as m_me:
+        m_me.return_value = ("mmcfly@bttf.com",
+                             github.User(id=1955,
+                                        username="mmcfly",
+                                        full_name="martin seamus mcfly",
+                                        bio="time traveler"))
+
+        response = client.post(reverse("auth-list"), form)
+        assert response.status_code == 200
+        assert response.data["username"] == "mmcfly"
+        assert response.data["auth_token"] != "" and response.data["auth_token"] != None
+        assert response.data["email"] == "mmcfly@bttf.com"
+        assert response.data["full_name"] == "martin seamus mcfly"
+        assert response.data["bio"] == "time traveler"
+        assert response.data["github_id"] == 1955
+
+
+def test_response_200_in_registration_with_github_account_in_a_project(client):
+    membership_model = get_model("projects", "Membership")
+    membership = factories.MembershipFactory(user=None)
+    form = {"type": "github",
+            "code": "xxxxxx",
+            "token": membership.token}
+
+    with patch("taiga.base.connectors.github.me") as m_me:
+        m_me.return_value = ("mmcfly@bttf.com",
+                             github.User(id=1955,
+                                        username="mmcfly",
+                                        full_name="martin seamus mcfly",
+                                        bio="time traveler"))
+
+        response = client.post(reverse("auth-list"), form)
+        assert response.status_code == 200
+        assert membership_model.objects.get(token=form["token"]).user.username == "mmcfly"
+
+
+def test_response_404_in_registration_with_github_account_in_a_project_with_invalid_token(client):
+    form = {"type": "github",
+            "code": "xxxxxx",
+            "token": "123456"}
+
+    with patch("taiga.base.connectors.github.me") as m_me:
+        m_me.return_value = ("mmcfly@bttf.com",
+                             github.User(id=1955,
+                                        username="mmcfly",
+                                        full_name="martin seamus mcfly",
+                                        bio="time traveler"))
+
+        response = client.post(reverse("auth-list"), form)
+        assert response.status_code == 404
diff --git a/tests/integration/test_mdrender.py b/tests/integration/test_mdrender.py
index cab7b28d..121cf38d 100644
--- a/tests/integration/test_mdrender.py
+++ b/tests/integration/test_mdrender.py
@@ -14,7 +14,7 @@ dummy_project.slug = "test"
 
 
 def test_proccessor_valid_user_mention():
-    factories.UserFactory(username="user1", first_name="test", last_name="name")
+    factories.UserFactory(username="user1", full_name="test name")
     result = render(dummy_project, "**@user1**")
     expected_result = "<p><strong><a alt=\"test name\" class=\"mention\" href=\"/#/profile/user1\" title=\"test name\">&commat;user1</a></strong></p>"
     assert result == expected_result
@@ -26,6 +26,6 @@ def test_proccessor_invalid_user_mention():
 
 
 def test_render_and_extract_mentions():
-    user = factories.UserFactory(username="user1", first_name="test", last_name="name")
+    user = factories.UserFactory(username="user1", full_name="test")
     (_, extracted) = render_and_extract(dummy_project, "**@user1**")
     assert extracted['mentions'] == [user]
diff --git a/tests/integration/test_neighbors.py b/tests/integration/test_neighbors.py
index a55dd267..5b91309e 100644
--- a/tests/integration/test_neighbors.py
+++ b/tests/integration/test_neighbors.py
@@ -22,12 +22,12 @@ def teardown_module():
 
 class TestGetAttribute:
     def test_no_attribute(self, object):
-        object.first_name = "name"
+        object.full_name = "name"
         with pytest.raises(AttributeError):
             n.get_attribute(object, "name")
 
         with pytest.raises(AttributeError):
-            n.get_attribute(object, "first_name__last_name")
+            n.get_attribute(object, "full_name__last_name")
 
     def test_one_level(self, object):
         object.name = "name"
@@ -35,14 +35,14 @@ class TestGetAttribute:
 
     def test_two_levels(self, object):
         object.name = object
-        object.name.first_name = "first name"
-        assert n.get_attribute(object, "name__first_name") == object.name.first_name
+        object.name.full_name = "first name"
+        assert n.get_attribute(object, "name__full_name") == object.name.full_name
 
     def test_three_levels(self, object):
         object.info = object
         object.info.name = object
-        object.info.name.first_name = "first name"
-        assert n.get_attribute(object, "info__name__first_name") == object.info.name.first_name
+        object.info.name.full_name = "first name"
+        assert n.get_attribute(object, "info__name__full_name") == object.info.name.full_name
 
 
 def test_transform_field_into_lookup():
@@ -237,14 +237,14 @@ class TestIssues:
 
     def test_ordering_by_owner(self):
         project = f.ProjectFactory.create()
-        owner1 = f.UserFactory.create(first_name="Chuck", last_name="Norris")
-        owner2 = f.UserFactory.create(first_name="George", last_name="Of The Jungle")
+        owner1 = f.UserFactory.create(full_name="Chuck Norris")
+        owner2 = f.UserFactory.create(full_name="George Of The Jungle")
 
         issue1 = f.IssueFactory.create(project=project, owner=owner2)
         issue2 = f.IssueFactory.create(project=project, owner=owner1)
         issue3 = f.IssueFactory.create(project=project, owner=owner1)
 
-        issues = Issue.objects.filter(project=project).order_by("owner__first_name")
+        issues = Issue.objects.filter(project=project).order_by("owner__full_name")
 
         issue2_neighbors = n.get_neighbors(issue2, results_set=issues)
         issue3_neighbors = n.get_neighbors(issue3, results_set=issues)
@@ -256,14 +256,14 @@ class TestIssues:
 
     def test_ordering_by_owner_desc(self):
         project = f.ProjectFactory.create()
-        owner1 = f.UserFactory.create(first_name="Chuck", last_name="Norris")
-        owner2 = f.UserFactory.create(first_name="George", last_name="Of The Jungle")
+        owner1 = f.UserFactory.create(full_name="Chuck Norris")
+        owner2 = f.UserFactory.create(full_name="George Of The Jungle")
 
         issue1 = f.IssueFactory.create(project=project, owner=owner2)
         issue2 = f.IssueFactory.create(project=project, owner=owner1)
         issue3 = f.IssueFactory.create(project=project, owner=owner1)
 
-        issues = Issue.objects.filter(project=project).order_by("-owner__first_name")
+        issues = Issue.objects.filter(project=project).order_by("-owner__full_name")
 
         issue1_neighbors = n.get_neighbors(issue1, results_set=issues)
         issue3_neighbors = n.get_neighbors(issue3, results_set=issues)
@@ -275,14 +275,14 @@ class TestIssues:
 
     def test_ordering_by_assigned_to(self):
         project = f.ProjectFactory.create()
-        assigned_to1 = f.UserFactory.create(first_name="Chuck", last_name="Norris")
-        assigned_to2 = f.UserFactory.create(first_name="George", last_name="Of The Jungle")
+        assigned_to1 = f.UserFactory.create(full_name="Chuck Norris")
+        assigned_to2 = f.UserFactory.create(full_name="George Of The Jungle")
 
         issue1 = f.IssueFactory.create(project=project, assigned_to=assigned_to2)
         issue2 = f.IssueFactory.create(project=project, assigned_to=assigned_to1)
         issue3 = f.IssueFactory.create(project=project, assigned_to=assigned_to1)
 
-        issues = Issue.objects.filter(project=project).order_by("assigned_to__first_name")
+        issues = Issue.objects.filter(project=project).order_by("assigned_to__full_name")
 
         issue2_neighbors = n.get_neighbors(issue2, results_set=issues)
         issue3_neighbors = n.get_neighbors(issue3, results_set=issues)
@@ -294,14 +294,14 @@ class TestIssues:
 
     def test_ordering_by_assigned_to_desc(self):
         project = f.ProjectFactory.create()
-        assigned_to1 = f.UserFactory.create(first_name="Chuck", last_name="Norris")
-        assigned_to2 = f.UserFactory.create(first_name="George", last_name="Of The Jungle")
+        assigned_to1 = f.UserFactory.create(full_name="Chuck Norris")
+        assigned_to2 = f.UserFactory.create(full_name="George Of The Jungle")
 
         issue1 = f.IssueFactory.create(project=project, assigned_to=assigned_to2)
         issue2 = f.IssueFactory.create(project=project, assigned_to=assigned_to1)
         issue3 = f.IssueFactory.create(project=project, assigned_to=assigned_to1)
 
-        issues = Issue.objects.filter(project=project).order_by("-assigned_to__first_name")
+        issues = Issue.objects.filter(project=project).order_by("-assigned_to__full_name")
 
         issue1_neighbors = n.get_neighbors(issue1, results_set=issues)
         issue3_neighbors = n.get_neighbors(issue3, results_set=issues)
diff --git a/tests/unit/test_connectors_github.py b/tests/unit/test_connectors_github.py
new file mode 100644
index 00000000..47c8a8e0
--- /dev/null
+++ b/tests/unit/test_connectors_github.py
@@ -0,0 +1,135 @@
+import pytest
+
+from unittest.mock import patch, Mock
+from taiga.base.connectors import github
+from taiga.base.connectors import exceptions as exc
+
+
+def test_url_builder():
+    assert (github._build_url("login", "authorize") ==
+            "https://api.github.com/login/oauth/authorize")
+    assert (github._build_url("login","access-token") ==
+            "https://api.github.com/login/oauth/access_token")
+    assert (github._build_url("user", "profile") ==
+            "https://api.github.com/user")
+    assert (github._build_url("user", "emails") ==
+            "https://api.github.com/user/emails")
+
+
+def test_login_success():
+    with patch("taiga.base.connectors.github.requests") as m_requests:
+        m_requests.post.return_value = m_response = Mock()
+        m_response.status_code = 200
+        m_response.json.return_value = {"access_token": "xxxxxxxx"}
+
+        auth_info = github.login("*access-code*", "**client-id**", "*client-secret*", github.HEADERS)
+
+        assert auth_info.access_token == "xxxxxxxx"
+        m_requests.post.assert_called_once_with("https://github.com/login/oauth/access_token",
+                                                headers=github.HEADERS,
+                                                params={'code': '*access-code*',
+                                                        'scope': 'user:emails',
+                                                        'client_id': '**client-id**',
+                                                        'client_secret': '*client-secret*'})
+
+
+def test_login_whit_errors():
+    with pytest.raises(exc.GitHubApiError) as e, \
+            patch("taiga.base.connectors.github.requests") as m_requests:
+        m_requests.post.return_value = m_response = Mock()
+        m_response.status_code = 200
+        m_response.json.return_value = {"error": "Invalid credentials"}
+
+        auth_info = github.login("*access-code*", "**client-id**", "*ient-secret*", github.HEADERS)
+    assert e.value.status_code == 400
+    assert e.value.detail["status_code"] == 200
+    assert e.value.detail["error"] == "Invalid credentials"
+
+
+def test_get_user_profile_success():
+    with patch("taiga.base.connectors.github.requests") as m_requests:
+        m_requests.get.return_value = m_response = Mock()
+        m_response.status_code = 200
+        m_response.json.return_value = {"id": 1955,
+                                        "login": "mmcfly",
+                                        "name": "martin seamus mcfly",
+                                        "bio": "time traveler"}
+
+        user_profile = github.get_user_profile(github.HEADERS)
+
+        assert user_profile.id == 1955
+        assert user_profile.username == "mmcfly"
+        assert user_profile.full_name == "martin seamus mcfly"
+        assert user_profile.bio == "time traveler"
+        m_requests.get.assert_called_once_with("https://api.github.com/user",
+                                               headers=github.HEADERS)
+
+
+def test_get_user_profile_whit_errors():
+    with pytest.raises(exc.GitHubApiError) as e, \
+            patch("taiga.base.connectors.github.requests") as m_requests:
+        m_requests.get.return_value = m_response = Mock()
+        m_response.status_code = 401
+        m_response.json.return_value = {"error": "Invalid credentials"}
+
+        auth_info = github.get_user_profile(github.HEADERS)
+    assert e.value.status_code == 400
+    assert e.value.detail["status_code"] == 401
+    assert e.value.detail["error"] == "Invalid credentials"
+
+
+def test_get_user_emails_success():
+    with patch("taiga.base.connectors.github.requests") as m_requests:
+        m_requests.get.return_value = m_response = Mock()
+        m_response.status_code = 200
+        m_response.json.return_value = [{"email": "darth-vader@bttf.com", "primary": False},
+                                        {"email": "mmcfly@bttf.com", "primary": True}]
+
+        emails = github.get_user_emails(github.HEADERS)
+
+        assert len(emails) == 2
+        assert emails[0].email == "darth-vader@bttf.com"
+        assert not emails[0].is_primary
+        assert emails[1].email == "mmcfly@bttf.com"
+        assert emails[1].is_primary
+        m_requests.get.assert_called_once_with("https://api.github.com/user/emails",
+                                               headers=github.HEADERS)
+
+
+def test_get_user_emails_whit_errors():
+    with pytest.raises(exc.GitHubApiError) as e, \
+            patch("taiga.base.connectors.github.requests") as m_requests:
+        m_requests.get.return_value = m_response = Mock()
+        m_response.status_code = 401
+        m_response.json.return_value = {"error": "Invalid credentials"}
+
+        emails = github.get_user_emails(github.HEADERS)
+    assert e.value.status_code == 400
+    assert e.value.detail["status_code"] == 401
+    assert e.value.detail["error"] == "Invalid credentials"
+
+
+def test_me():
+    with patch("taiga.base.connectors.github.login") as m_login, \
+            patch("taiga.base.connectors.github.get_user_profile") as m_get_user_profile, \
+            patch("taiga.base.connectors.github.get_user_emails") as m_get_user_emails:
+        m_login.return_value = github.AuthInfo(access_token="xxxxxxxx")
+        m_get_user_profile.return_value = github.User(id=1955,
+                                                      username="mmcfly",
+                                                      full_name="martin seamus mcfly",
+                                                      bio="time traveler")
+        m_get_user_emails.return_value = [github.Email(email="darth-vader@bttf.com", is_primary=False),
+                                          github.Email(email="mmcfly@bttf.com", is_primary=True)]
+
+        email, user = github.me("**access-code**")
+
+        assert email == "mmcfly@bttf.com"
+        assert user.id == 1955
+        assert user.username == "mmcfly"
+        assert user.full_name == "martin seamus mcfly"
+        assert user.bio == "time traveler"
+
+        headers = github.HEADERS.copy()
+        headers["Authorization"] = "token xxxxxxxx"
+        m_get_user_profile.assert_called_once_with(headers=headers)
+        m_get_user_emails.assert_called_once_with(headers=headers)