Git commits in Moodle 2.5.3 by Davo Smith

commit 5ef9103c67045e43af971a2aa34c48adde8718e9
Author: Davo Smith <git@davosmith.co.uk>
Date:   Tue, 15 Oct 2013 21:30:33 +0800
Tag:    v2.5.3

MDL-35402 forms - prevent crash when multiple rules defined on an editor element