Git commits in Moodle 2.7.19 by Eloy Lafuente (stronk7)

commit 1f2a60e4582af5b67ab13ec0cb69f82b94077ade
Author: Eloy Lafuente (stronk7) <stronk7@moodle.org>
Date:   Fri, 27 Jan 2017 07:27:42 +0800
Tag:    v2.7.19

weekly release 2.7.18+