def custom_slug_or_title
      (Refinery::Pages.use_custom_slugs && custom_slug.presence) ||
        menu_title.presence || title.presence
    end
def custom_slug_or_title
      (Refinery::Pages.use_custom_slugs && custom_slug.presence) ||
        menu_title.presence || title.presence
    end
Returns in cascading order: custom_slug or menu_title or title depending on
 which attribute is first found to be present for this page.