fix page form bugs

app/controllers/admin/pages_controller.rb

@@ -32,6 +32,7 @@ class Admin::PagesController < ApplicationController
     @i18n_variable = @item.i18n_variable
     @designs = Design.all.entries
     @design = @item.design
+    @app_frontend_urls = @item.module_app.app_pages
   end
 
   def create