Adds a link to the admin view all posts page that filters on published featured articles Full credit goes to Bainternet on wordpress.stackexchange.com for the answer here: http://wordpress.stackexchange.com/questions/43831/add-a-special-filter-link-to-all-posts-in-admin
pjhoberman/Featured---Published-Posts
Adds a link to the admin view all posts page that filters on published featured articles