Upgrading to 0.5.3

git-svn-id: https://plugins.svn.wordpress.org/quiz-master-next/trunk@786595 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updating to 0.6

git-svn-id: https://plugins.svn.wordpress.org/quiz-master-next/trunk@790622 b8457f37-d9ea-0310-8a92-e5e31aec5664