Author: Stephen Bourget
MDL-51853 calendar: allow entries imported from a file to be updated.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=c3feaf269e102f5f8816bff9d66046ce61727329
http://github.com/moodle/moodle/commit/c3feaf269e102f5f8816bff9d66046ce61727329
+ 3.3 en [eventsubscriptioneditwarning,core_calendar]