v3.5.1 released

git-svn-id: https://plugins.svn.wordpress.org/social-locker/trunk@925079 b8457f37-d9ea-0310-8a92-e5e31aec5664
deleted obsolete files

git-svn-id: https://plugins.svn.wordpress.org/social-locker/trunk@925080 b8457f37-d9ea-0310-8a92-e5e31aec5664