Some cleanup

- travis tabulation
- extra namespace definition in entities

src/Wallabag/CoreBundle/Entity/Entry.php

@@ -187,7 +187,7 @@ class Entry
     /*
      * @param User     $user
      */
-    public function __construct(\Wallabag\UserBundle\Entity\User $user)
+    public function __construct(User $user)
     {
         $this->user = $user;
         $this->tags = new ArrayCollection();