Version 5.0.0

git-svn-id: https://plugins.svn.wordpress.org/visualcaptcha/trunk@864109 b8457f37-d9ea-0310-8a92-e5e31aec5664
Version 5.0.0 (removing unnecessary files)

git-svn-id: https://plugins.svn.wordpress.org/visualcaptcha/trunk@864113 b8457f37-d9ea-0310-8a92-e5e31aec5664