Git commits in Moodle 2.7.6 by Jean-Michel Vedrine

commit 476fa05c083a31f89c866cb740491c9f07406af3
Author: Jean-Michel Vedrine <vedrine@vedrine.org>
Date:   Sun, 28 Dec 2014 01:15:51 +0800
Tag:    v2.7.6

MDL-48709 mod_lesson: subclusters are not working