fixed conflict with WooCommerce JS

git-svn-id: https://plugins.svn.wordpress.org/event-calendar-ticketing/trunk@861768 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fixed version detection

git-svn-id: https://plugins.svn.wordpress.org/event-calendar-ticketing/trunk@864992 b8457f37-d9ea-0310-8a92-e5e31aec5664
Prevent breaking WC ajax

git-svn-id: https://plugins.svn.wordpress.org/event-calendar-ticketing/trunk@866500 b8457f37-d9ea-0310-8a92-e5e31aec5664