Git commits in Moodle 2.2.4 by Henning Bostelmann

commit d9df0e34fc1ab8835fa8a3d489ff48dd9f5b594b
Author: Henning Bostelmann <henning.bostelmann@york.ac.uk>
Date:   Sun, 23 Oct 2011 06:43:11 +0800
Tag:    v2.2.4

MDL-28557 Calendar filters: show all group events in course to teacher