update menu import and export

lib/tasks/clear_data.rake

@@ -20,4 +20,26 @@ namespace :clear do
     SeedGenerator.where("id > 1").update(:current => 0, :next => 1)
     puts "Clear Data Done."
   end
+
+  desc "Clear Menu"
+  task :menu => :environment do
+   
+    
+    MenuItemOption.destroy_all
+    MenuItemAttribute.destroy_all
+   
+    MenuItemSet.destroy_all
+    
+    MenuInstanceItemSet.destroy_all
+    ItemSet.destroy_all
+    
+    MenuItemInstance.destroy_all
+    MenuItem.destroy_all
+   
+    MenuCategory.destroy_all
+    Menu.destroy_all
+
+    Account.destroy_all
+    puts "Clear all Menu Done."
+  end
 end