Git commits in Moodle 3.2.9 by David Monllao

commit 52b4e371541456e2f01d8fd5b76b5f60d2635128
Author: David Monllao <davidm@moodle.com>
Date:   Tue, 15 May 2018 15:42:25 +0800
Tag:    v3.2.9

weekly release 3.2.8+