Git commits in Moodle 3.9.0 by Jonathon Fowler

commit 4ac6c3d44ec6db42652710e55c262e104b49b70e
Author: Jonathon Fowler <fowlerj@usq.edu.au>
Date:   Thu, 07 May 2020 11:06:06 +0800
Tag:    v3.9.0-beta

MDL-68631 cron: ensure the cron user is reset between scheduled tasks

commit 2a0645b1951a916edb787ff621910894a7379b5c
Author: Jonathon Fowler <fowlerj@usq.edu.au>
Date:   Tue, 03 Dec 2019 13:20:40 +0800
Tag:    v3.9.0-beta

MDL-67442 assign: expand/contract text works in all browsers now

commit ec0d17b543562770b0165c3841710788d7af2d5a
Author: Jonathon Fowler <fowlerj@usq.edu.au>
Date:   Thu, 17 Oct 2019 12:37:04 +0800
Tag:    v3.9.0-beta

MDL-66936 url: fix error when modinfo cache is rebuilt non-interactively