Git commits in Moodle 3.6.6 by Jake Dallimore

commit 2baf9a81d813229fb8fb53111ccbc4cca85c36fd
Author: Jake Dallimore <jake@moodle.com>
Date:   Fri, 30 Aug 2019 13:12:09 +0800
Tag:    v3.6.6

weekly release 3.6.5+