Git commits in Moodle 2.7.12 by Eloy Lafuente (stronk7)

commit ab881c73e9f5668a93fba9284f89a21254b13f9a
Author: Eloy Lafuente (stronk7) <stronk7@moodle.org>
Date:   Tue, 10 Nov 2015 17:49:45 +0800
Tag:    v2.7.12

weekly release 2.7.11+