when using a template, don't bother with the fields option

git-svn-id: https://plugins.svn.wordpress.org/events-made-easy/trunk@1012945 b8457f37-d9ea-0310-8a92-e5e31aec5664
sensible show/hide

git-svn-id: https://plugins.svn.wordpress.org/events-made-easy/trunk@1012946 b8457f37-d9ea-0310-8a92-e5e31aec5664