Added better sizing support logic for integers in admin screen avatar badges

git-svn-id: https://plugins.svn.wordpress.org/mindutopia-user-thumbnails/trunk@756980 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated Stable Tag.

git-svn-id: https://plugins.svn.wordpress.org/mindutopia-user-thumbnails/trunk@756981 b8457f37-d9ea-0310-8a92-e5e31aec5664