mongoid rc_6 & fix bugs

app/controllers/admin/links_controller.rb

@@ -47,6 +47,7 @@ class Admin::LinksController < ApplicationController
   def destroy
     @link = Link.find(params[:id])
     @link.destroy
+    @link.destroy_i18n_variable
 
     redirect_to admin_items_url( :parent_id => @link.parent_id )
   end

app/controllers/admin/pages_controller.rb

@@ -46,6 +46,7 @@ class Admin::PagesController < ApplicationController
   def destroy
     @page = Page.find(params[:id])
     @page.destroy
+    @page.destroy_i18n_variable
 
     redirect_to admin_items_url( :parent_id => @page.parent_id )
   end