Themes and plugins in non-writeable directories weren't being highlighted correctly

git-svn-id: https://plugins.svn.wordpress.org/automatic-updater/trunk@743865 b8457f37-d9ea-0310-8a92-e5e31aec5664
Pinking shears

git-svn-id: https://plugins.svn.wordpress.org/automatic-updater/trunk@743866 b8457f37-d9ea-0310-8a92-e5e31aec5664