Maybe you can inspect http://wordpress.org/extend/plugins/editor-tabs/ More Solution customization - Managing Images for a WordPress Blog: Picasa or Flickr? in WordPress plugins - Adding rel="nofollow" to external links in posts? in WordPress Include files in child theme functions file in WordPress Showing User's Post Counts by Custom Post Type in the Admin's User List? in WordPress css - Horizontal drop down category with hover effect working in WordPress Reffered: https://wordpress.org/
