plugin version 1.1 release with new admin user interface to manage events

git-svn-id: https://plugins.svn.wordpress.org/php-event-calendar/trunk@959323 b8457f37-d9ea-0310-8a92-e5e31aec5664
change from version wording from 1.5 (wrongly named) to 1.1.

git-svn-id: https://plugins.svn.wordpress.org/php-event-calendar/trunk@959326 b8457f37-d9ea-0310-8a92-e5e31aec5664