add logic to filter tasks

Resources/config/services/form.yml

@@ -0,0 +1,8 @@
+services:
+    Chill\TaskBundle\Form\SingleTaskListType:
+        arguments:
+            $em: '@Doctrine\ORM\EntityManagerInterface'
+            $authorizationHelper: '@Chill\MainBundle\Security\Authorization\AuthorizationHelper'
+            $tokenStorage: '@Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface'
+        tags:
+            - { name: form.type }