Refactor update creation api

This merge request does the following:

• Raise DRF errors rather than returning response to take advantage of the DRF exception handling mechanism
• Create serialisers for PUT request to simplify the code
• Improve validation checks in several places
• Fixes several issues in DRF infrastructure uses
• Fixes JSON fields handling
• Remove routes that do no fully qualify objects
• Implement a custom DRF exception handler that will allow to log errors
• Improve testing
• Improve permission management

beat/web/team/api.py

@@ -102,7 +102,7 @@ class TeamDetailView(CommonContextMixin, generics.RetrieveUpdateDestroyAPIView):
             self.permission_classes.append(IsOwner)
         return super(TeamDetailView, self).get_permissions()
 
-    def get_queryset(self):
+    def get_object(self):
         owner_name = self.kwargs.get("owner_name")
         team_name = self.kwargs.get("team_name")
 
@@ -118,12 +118,12 @@ class TeamDetailView(CommonContextMixin, generics.RetrieveUpdateDestroyAPIView):
         return super(TeamDetailView, self).get_serializer(*args, **kwargs)
 
     def get(self, request, owner_name, team_name):
-        team = self.get_queryset()
+        team = self.get_object()
         serializer = self.serializer_class(team, context={"user": request.user})
         return Response(serializer.data)
 
     def delete(self, request, owner_name, team_name):
-        team = self.get_queryset()
+        team = self.get_object()
 
         # Check that the team can still be deleted
         if not (team.deletable()):
@@ -136,7 +136,7 @@ class TeamDetailView(CommonContextMixin, generics.RetrieveUpdateDestroyAPIView):
         return Response(status=status.HTTP_204_NO_CONTENT)
 
     def update(self, request, owner_name, team_name):
-        team = self.get_queryset()
+        team = self.get_object()
         self.check_object_permissions(request, team)
 
         serializer = self.writing_serializer_class(