fix external link bug

app/helpers/admin/announcements_helper.rb

@@ -4,6 +4,7 @@ require 'json'
 
 module Admin::AnnouncementsHelper
   def page_for_bulletin(bulletin)
+    if !bulletin.is_external_link || bulletin.external_link.blank?
       ann_page = nil
       pages = Page.where(:module=>'announcement').select{|page| page.enabled_for.include?(I18n.locale.to_s)}
 
@@ -27,6 +28,9 @@ module Admin::AnnouncementsHelper
 
       ann_page = pages.first if ann_page.nil?
       request.protocol+(request.host_with_port+ann_page.url+'/'+bulletin.to_param).gsub('//','/') rescue "#"
+    else
+      bulletin.external_link
+    end
   end
 
   def import_this_announcement(row,categories,tags)