Don't processs AJAX response if user has scrolled back down into content.


git-svn-id: https://plugins.svn.wordpress.org/tagregator/trunk@1010723 b8457f37-d9ea-0310-8a92-e5e31aec5664
Force cachebust for any sites running trunk on production.


git-svn-id: https://plugins.svn.wordpress.org/tagregator/trunk@1010725 b8457f37-d9ea-0310-8a92-e5e31aec5664