Commit version 1.5

git-svn-id: https://plugins.svn.wordpress.org/humancaptcha/trunk@757121 b8457f37-d9ea-0310-8a92-e5e31aec5664
Commit version 1.5 again

git-svn-id: https://plugins.svn.wordpress.org/humancaptcha/trunk@757122 b8457f37-d9ea-0310-8a92-e5e31aec5664