Released v2.0.59

git-svn-id: https://plugins.svn.wordpress.org/nextgen-gallery/trunk@877327 b8457f37-d9ea-0310-8a92-e5e31aec5664
Set stable branch to trunk

git-svn-id: https://plugins.svn.wordpress.org/nextgen-gallery/trunk@877328 b8457f37-d9ea-0310-8a92-e5e31aec5664