def skip_callbacks_on_some_models
      ShinyNewsletters::Template.skip_callback :create, :after, :add_elements
      ShinyNewsletters::Edition.skip_callback  :create, :after, :add_elements
      ShinyPages::Template.skip_callback       :create, :after, :add_elements
      ShinyPages::Page.skip_callback           :create, :after, :add_elements