Only require the first email in add members lightbox

app/coffee/modules/admin/lightboxes.coffee

@@ -77,6 +77,9 @@ class LightboxAddMembersController
         @.form.reset()
         return if not @.form.validate()
 
+        @.memberInvites = _.filter(@.memberInvites, (invites) ->
+            invites.email != "")
+
         @.submitInvites = true
         promise = @rs.memberships.bulkCreateMemberships(
             @.project.id,

app/partials/admin/lightbox-add-members.jade

@@ -10,6 +10,7 @@ a.close(
         .add-single-member(ng-repeat="member in vm.memberInvites")
             fieldset
                 input(
+                    ng-if="$first"
                     type="email"
                     required
                     placeholder="{{'LIGHTBOX.CREATE_MEMBER.PLACEHOLDER_TYPE_EMAIL' | translate}}"
@@ -17,6 +18,13 @@ a.close(
                     data-type="email"
                     ng-model="member.email"
                 )
+                input(
+                    ng-if="!$first"
+                    type="email"
+                    placeholder="{{'LIGHTBOX.CREATE_MEMBER.PLACEHOLDER_TYPE_EMAIL' | translate}}"
+                    data-type="email"
+                    ng-model="member.email"
+                )
             fieldset
                 select(
                     ng-if="vm.project"