Kill trailing whitespace in ruby files

app/models/janitor_trial.rb

@@ -6,59 +6,59 @@ class JanitorTrial < ActiveRecord::Base
   after_destroy :create_feedback
   validates_presence_of :user
   before_validation :initialize_creator
-  
+
   def self.search(params)
     q = scoped
     return q if params.blank?
-    
+
     if params[:user_name]
       q = q.where("user_id = (select _.id from users _ where lower(_.name) = ?)", params[:user_name].downcase)
     end
-    
+
     if params[:user_id]
       q = q.where("user_id = ?", params[:user_id].to_i)
     end
-    
+
     q
   end
-    
+
   def initialize_creator
     self.creator_id = CurrentUser.id
   end
-  
+
   def initialize_original_level
     self.original_level = user.level
   end
-  
+
   def user_name
     user.try(:name)
   end
-  
+
   def user_name=(name)
     self.user_id = User.name_to_id(name)
   end
-  
+
   def send_dmail
     body = "You have been selected as a test janitor. You can now approve pending posts and have access to the moderation interface.\n\nOver the next several weeks your approvals will be monitored. If the majority of them are quality uploads, then you will be promoted to full janitor status which grants you the ability to delete and undelete posts, ban users, and revert tag changes from vandals. If you fail the trial period, you will be demoted back to your original level and you'll receive a negative user record indicating you previously attempted and failed a test janitor trial.\n\nThere is a minimum quota of 5 approvals a week to indicate that you are being active. Remember, the goal isn't to approve as much as possible. It's to filter out borderline-quality art.\n\nIf you have any questions please respond to this message."
-    
+
     Dmail.create_split(:title => "Test Janitor Trial Period", :body => body, :to_id => user_id)
   end
-  
+
   def promote_user
     user.update_column(:level, User::Levels::JANITOR)
   end
-  
+
   def create_feedback
     user.feedback.create(
       :category => "negative",
       :body => "Demoted from janitor trial"
     )
   end
-  
+
   def promote!
     destroy
   end
-  
+
   def demote!
     user.update_column(:level, original_level)
     destroy