* place the ability to aggregate events without location.
* place the ability to predefine if the aggregated events will be placed as 'draft' or automatically published.
* fix a bug while adding the categories in the ESS feed creation.
* fix a bug that duplicated the location if the zip of the state wasn't available in the feed.

git-svn-id: https://plugins.svn.wordpress.org/events-manager-ess/trunk@854164 b8457f37-d9ea-0310-8a92-e5e31aec5664