Git commits in Moodle 2.3.4 by Kevin Wiliarty

commit d3da4d8c1a709d0f803c6e8aaa12650840f71028
Author: Kevin Wiliarty <kevin.wiliarty@gmail.com>
Date:   Tue, 04 Sep 2012 13:50:07 +0800
Tag:    v2.3.4

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