Kill trailing whitespaces in javascript files

app/assets/javascripts/favorites.js

@@ -1,12 +1,12 @@
 (function() {
   Danbooru.Favorite = {};
-  
+
   Danbooru.Favorite.initialize_all = function() {
     if ($("#c-posts").length) {
       this.hide_or_show_add_to_favorites_link();
     }
   }
-  
+
   Danbooru.Favorite.hide_or_show_add_to_favorites_link = function() {
     var favorites = Danbooru.meta("favorites");
     var current_user_id = Danbooru.meta("current-user-id");
@@ -19,13 +19,13 @@
     if ((favorites != undefined) && (favorites.match(regexp))) {
       $("#add-to-favorites").hide();
     } else {
-      $("#remove-from-favorites").hide();      
+      $("#remove-from-favorites").hide();
     }
   }
-  
+
   Danbooru.Favorite.create = function(post_id) {
     Danbooru.Post.notice_update("inc");
-    
+
     $.ajax({
       type: "POST",
       url: "/favorites",
@@ -40,10 +40,10 @@
       }
     });
   }
-  
+
   Danbooru.Favorite.destroy = function(post_id) {
     Danbooru.Post.notice_update("inc");
-    
+
     $.ajax({
       type: "DELETE",
       url: "/favorites/" + post_id,