Refactor rendering fragment: using controller path

src/Bundle/ChillMainBundle/Resources/views/Menu/user.html.twig

@@ -28,7 +28,7 @@
 
         <b>
             {{ app.user.username }}
-            {{ render(controller('ChillMainBundle:UI:showNotificationUserCounter')) }}
+            {{ render(controller('Chill\\MainBundle\\Controller\\UIController::showNotificationUserCounterAction')) }}
         </b>
 
         {% if is_granted('ROLE_PREVIOUS_ADMIN') %}