Fixed CSS to hide "never submit ..." message.

git-svn-id: https://plugins.svn.wordpress.org/wpgform/trunk@809647 b8457f37-d9ea-0310-8a92-e5e31aec5664
Added logic to support multiple instances of same form on a page.

git-svn-id: https://plugins.svn.wordpress.org/wpgform/trunk@809648 b8457f37-d9ea-0310-8a92-e5e31aec5664
Prep for v0.61 release.

git-svn-id: https://plugins.svn.wordpress.org/wpgform/trunk@809649 b8457f37-d9ea-0310-8a92-e5e31aec5664