Git commits in Moodle 3.5.16 by Jake Dallimore

commit c4a024d9fcd721022ffbd2eb9d2a767308d38854
Author: Jake Dallimore <jake@moodle.com>
Date:   Fri, 04 Dec 2020 08:43:00 +0800
Tag:    v3.5.16

weekly release 3.5.15+