Git commits in Moodle 2.7.2 by Syxton

commit 8121a2fad02dbac060355d2c9c2dd59dc475b3d1
Author: Syxton <davidso1@rose-hulman.edu>
Date:   Thu, 28 Aug 2014 03:14:08 +0800
Tag:    v2.7.2

MDL-45952 feedback: non-respondents in groupings