Applied php-cs-fixer and added some @PHPDoc

Signed-off-by: Gergely POLONKAI <polesz@w00d5t0ck.info>

src/KekRozsak/AdminBundle/Controller/DefaultController.php

@@ -69,7 +69,6 @@ class DefaultController extends Controller
     public function groupJoinDeclineAction()
     {
         // TODO: A reason must be written to decline a join request!
-
         return array(
         );
     }