feedback changes and added mark all read

guardian/views.py

@@ -149,7 +149,7 @@ class TaskListAPIView(viewsets.ModelViewSet):
     def get_queryset(self):
         queryset = JuniorTask.objects.filter(guardian__user=self.request.user
                                              ).select_related('junior', 'junior__auth'
-                                                              ).order_by('due_date', 'created_at')
+                                                              ).order_by('-created_at')
 
         queryset = self.filter_queryset(queryset)
         return queryset