Git commits in Moodle 2.9.6 by sam marshall

commit af22f8a1596837ecc72046599a191cc156277d68
Author: sam marshall <s.marshall@open.ac.uk>
Date:   Fri, 18 Mar 2016 21:44:50 +0800
Tag:    v2.9.6

MDL-53548 Accessibility: Block show/hide keyboard access broken