Git commits in Moodle 2.9.1 by Jean-Michel Vedrine

commit 2107531f3c8d3873caaaf1fb6f8a98fbe40ed617
Author: Jean-Michel Vedrine <vedrine@vedrine.org>
Date:   Sun, 08 Feb 2015 23:04:55 +0800
Tag:    v2.9.1

MDL-34102 mod_lesson: display feedback