Git commits in Moodle 2.5.7 by Yuliya Bozhko

commit 9eef6b5237520f0cb9874564e577c64e3a831987
Author: Yuliya Bozhko <yuliya.bozhko@totaralms.com>
Date:   Fri, 20 Jun 2014 05:44:33 +0800
Tag:    v2.5.7

MDL-46042 badges: Clean up external badge data