Fixed bug in group join/joinrequest code

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

src/KekRozsak/FrontBundle/Controller/GroupController.php

@@ -89,7 +89,7 @@ class GroupController extends Controller
 			);
 		}
 
-		$membership = new UserGroupMembership();
+		$membership = new UserGroupMembership($user, $group);
 		$membership->setUser($user);
 		$membership->setGroup($group);
 		$membership->setMembershipRequestedAt(new \DateTime('now'));

src/KekRozsak/FrontBundle/Entity/UserGroupMembership.php

@@ -20,7 +20,6 @@ class UserGroupMembership
 		$this->setUser($user);
 		$this->setGroup($group);
 		$this->setMembershipRequestedAt(new \DateTime('now'));
-		$this->setMembershipAcceptedAt(new \DateTime('now'));
 	}
 
 	/**