Make the filter for authorisation easier for developers

vendor/built_in_modules/announcement/app/controllers/panel/announcement/back_end/bulletins_controller.rb

@@ -3,7 +3,7 @@ class Panel::Announcement::BackEnd::BulletinsController < OrbitBackendController
 
   before_filter :clean_values, :only => [:create, :update]
 
-  prepend_before_filter :set_public, :only => [:index, :show, :get_sorted_and_filtered_bulletins]
+  open_for_visitor :only => [:index, :show, :get_sorted_and_filtered_bulletins]
 
   before_filter :only => [ :new, :create, :edit, :update ] do |controller|
     @categories = get_categories_for_form