Git commits in Moodle 2.4.7 by Jean-Michel Vedrine

commit 0e099cc444cc3254307e6a72325adec914ddd284
Author: Jean-Michel Vedrine <vedrine@vedrine.org>
Date:   Thu, 31 Oct 2013 00:55:34 +0800
Tag:    v2.4.7

MDL-41624 DragMath crashes Firefox