Fix styling of the add favorite button

src/Packagist/WebBundle/Controller/UserController.php

@@ -71,6 +71,7 @@ class UserController extends Controller
      * @Template()
      * @Route("/users/{name}/favorites/", name="user_favorites")
      * @ParamConverter("user", options={"mapping": {"name": "username"}})
+     * @Method({"GET"})
      */
     public function favoritesAction(Request $req, User $user)
     {
@@ -82,7 +83,7 @@ class UserController extends Controller
     }
 
     /**
-     * @Route("/users/{name}/favorites", name="user_add_fav", defaults={"_format" = "json"})
+     * @Route("/users/{name}/favorites/", name="user_add_fav", defaults={"_format" = "json"})
      * @ParamConverter("user", options={"mapping": {"name": "username"}})
      * @Method({"POST"})
      */

src/Packagist/WebBundle/Resources/public/css/main.css

@@ -590,13 +590,14 @@ form ul {
 }
 
 .package .mark-favorite {
-  width: 20px;
-  height: 20px;
+  width: 16px;
+  height: 16px;
   display: inline-block;
-  background: black;
+  background: url(../img/favorite.png) 0 -17px no-repeat;
+  cursor: pointer;
 }
 .package .mark-favorite.is-favorite {
-  background: green;
+  background-position: 0 0;
 }
 
 .no-js .package .force-update, .no-js .package .mark-favorite {