Git merges in Moodle 3.9.9 by Ilya Tregubov

commit bc3e140d8bf564095d50f4ab752c702b6c56aa81
Author: Ilya Tregubov <ilya@moodle.com>
Date:   Wed, 28 Jul 2021 22:48:25 +0800
Tag:    v3.9.9

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


commit 698142b1f5f2b8bb33a3478aa957d59b4bc09da4
Author: Ilya Tregubov <ilya@moodle.com>
Date:   Tue, 27 Jul 2021 18:39:02 +0800
Tag:    v3.9.9

Merge branch 'MDL-72179-39' of git://github.com/andrewnicols/moodle into MOODLE_39_STABLE


commit 9ccb3a2af9b194b89a3c3c110ecdf4d93845183d
Author: Ilya Tregubov <ilya@moodle.com>
Date:   Fri, 23 Jul 2021 17:31:04 +0800
Tag:    v3.9.9

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


commit 9fb1e3d300805ee3c148f564a2bfd5a18a0cc7fd
Author: Ilya Tregubov <ilya@moodle.com>
Date:   Wed, 21 Jul 2021 14:02:52 +0800
Tag:    v3.9.9

Merge branch 'MDL-72125-39' of git://github.com/andrewnicols/moodle into MOODLE_39_STABLE