Git commits in Moodle 2.5.7 by David Monllao

commit 64c1ec38d65365d1012eef347d37e2b530e66d2b
Author: David Monllao <davidm@moodle.com>
Date:   Tue, 13 May 2014 19:56:36 +0800
Tag:    v2.5.7

MDL-45294 behat: Updating block references to aria label value

commit f335645600ce4a5a92e17e137065c73e25cffc59
Author: David Monllao <davidm@moodle.com>
Date:   Mon, 28 Apr 2014 20:44:15 +0800
Tag:    v2.5.7

MDL-45294 behat: Supporting an aria-label as a block ref