updated form to mirror the form in GoToWebinar settings for each webinar

git-svn-id: https://plugins.svn.wordpress.org/gotowp/trunk@852044 b8457f37-d9ea-0310-8a92-e5e31aec5664
updated form to mirror the form in GoToWebinar settings for each webinar

git-svn-id: https://plugins.svn.wordpress.org/gotowp/trunk@852051 b8457f37-d9ea-0310-8a92-e5e31aec5664