migrate for app config. fix panel style intro misplace

lib/tasks/migrate.rake

@@ -431,4 +431,13 @@ namespace :migrate do
     
   end
 
+  task :clean_module_app_objects => :environment do
+    ModuleApp.all.each do |ma|
+      %w{intro widget_fields_link_method widgets  get_default_widget app_pages author enable_frontend get_widget_style get_widget_style organization update_info using_default_widget version widget_fields version create_date}.each  do |field| 
+        ma.unset field
+      end
+      ma.save
+    end
+  end
+
 end