Test for WP 4.0 and small modifications

git-svn-id: https://plugins.svn.wordpress.org/fws-ajax-contact-form/trunk@978715 b8457f37-d9ea-0310-8a92-e5e31aec5664
Forgot to add the the latest version  number

git-svn-id: https://plugins.svn.wordpress.org/fws-ajax-contact-form/trunk@978740 b8457f37-d9ea-0310-8a92-e5e31aec5664