Update "supported to" to 4.0

git-svn-id: https://plugins.svn.wordpress.org/livehelpnow-help-desk/trunk@979220 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update "supported to" to 4.0

git-svn-id: https://plugins.svn.wordpress.org/livehelpnow-help-desk/trunk@979222 b8457f37-d9ea-0310-8a92-e5e31aec5664