Git commits in Moodle 2.2.7 by Kevin Wiliarty

commit ce98dd31911f13f39118bf39a9ecfc03e2c7169b
Author: Kevin Wiliarty <kevin.wiliarty@gmail.com>
Date:   Tue, 04 Sep 2012 13:50:07 +0800
Tag:    v2.2.7

MDL-35221 mod_feedback: replace checkbox with advcheckbox for all requirable feedback question types