improve networks ui

git-svn-id: http://plugins.svn.wordpress.org/wordpress-social-login@656282 b8457f37-d9ea-0310-8a92-e5e31aec5664
this one aswell

git-svn-id: http://plugins.svn.wordpress.org/wordpress-social-login@656284 b8457f37-d9ea-0310-8a92-e5e31aec5664