Git merges in Moodle 3.9.10 by Ilya Tregubov

commit 4e14e2631c83e982164d6b0ae0566ba7f8a96702
Author: Ilya Tregubov <ilya@moodle.com>
Date:   Thu, 12 Aug 2021 22:50:20 +0800
Tag:    v3.9.10

Merge branch 'install_39_STABLE' of https://git.in.moodle.com/amosbot/moodle-install into MOODLE_39_STABLE