Kill trailing whitespace in ruby files

app/models/forum_topic.rb

@@ -11,34 +11,34 @@ class ForumTopic < ActiveRecord::Base
   validates_presence_of :title, :creator_id
   validates_associated :original_post
   accepts_nested_attributes_for :original_post
-  
+
   module SearchMethods
     def title_matches(title)
       where("text_index @@ plainto_tsquery(E?)", title.to_escaped_for_tsquery_split)
     end
-    
+
     def active
       where("is_deleted = false")
     end
-    
+
     def search(params)
       q = scoped
       return q if params.blank?
-      
+
       if params[:title_matches].present?
         q = q.title_matches(params[:title_matches])
       end
-      
+
       if params[:title].present?
         q = q.where("title = ?", params[:title])
       end
-      
+
       q
     end
   end
-  
+
   extend SearchMethods
-  
+
   def editable_by?(user)
     creator_id == user.id || user.is_janitor?
   end
@@ -50,15 +50,15 @@ class ForumTopic < ActiveRecord::Base
   def initialize_creator
     self.creator_id = CurrentUser.id
   end
-  
+
   def initialize_updater
     self.updater_id = CurrentUser.id
   end
-  
+
   def last_page
     (posts.count / Danbooru.config.posts_per_page.to_f).ceil
   end
-  
+
   def presenter(forum_posts)
     @presenter ||= ForumTopicPresenter.new(self, forum_posts)
   end