Fixed Calendar list to only show dates for a specific event when event_id is set.

git-svn-id: https://plugins.svn.wordpress.org/brown-paper-tickets-event-list/trunk@791351 b8457f37-d9ea-0310-8a92-e5e31aec5664
Added the ability to select the shipping options available on events. If listing all events, the shipping options will apply to each event.

git-svn-id: https://plugins.svn.wordpress.org/brown-paper-tickets-event-list/trunk@793815 b8457f37-d9ea-0310-8a92-e5e31aec5664