Debounce load US's

app/coffee/modules/events.coffee

@@ -204,7 +204,7 @@ class EventsService
         subscription = {
             scope: scope,
             routingKey: routingKey,
-            callback: _.debounce(callback, 500, {"leading": true, "trailing": false})
+            callback: callback
         }
 
         message = {

app/coffee/modules/kanban/main.coffee

@@ -31,6 +31,7 @@ bindOnce = @.taiga.bindOnce
 groupBy = @.taiga.groupBy
 timeout = @.taiga.timeout
 bindMethods = @.taiga.bindMethods
+debounceLeading = @.taiga.debounceLeading
 
 module = angular.module("taigaKanban")
 
@@ -342,8 +343,8 @@ class KanbanController extends mixOf(taiga.Controller, taiga.PageMixin, taiga.Fi
 
     initializeSubscription: ->
         routingKey1 = "changes.project.#{@scope.projectId}.userstories"
-        @events.subscribe @scope, routingKey1, (message) =>
-            @.loadUserstories()
+        @events.subscribe @scope, routingKey1, debounceLeading(300, (message) =>
+            @.loadUserstories())
 
     loadInitialData: ->
         project = @.loadProject()