Git commits in Moodle 3.8.6 by Mikhail Golenkov

commit 19cce334605e2214a0487ae4f7cc1bc4e23d84d9
Author: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date:   Mon, 05 Oct 2020 11:56:58 +0800
Tag:    v3.8.6

MDL-69791 gradereport: Fix error message when invalid grade is entered


commit 323a15ba58b3f545972749660c1521a671a55860
Author: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date:   Sun, 04 Oct 2020 15:25:43 +0800
Tag:    v3.8.6

MDL-69818 mod_feedback: Fix item dependency during activity restoration


commit 8912dcbe150be5d274fe9c0b1fe0583e314576e0
Author: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date:   Sun, 04 Oct 2020 10:44:17 +0800
Tag:    v3.8.6

MDL-69752 mod_data: Format module intro on Database activities page


commit 9167c6d47c49dfec187b189bd3d9e8356abcbfd2
Author: Mikhail Golenkov <mikhailgolenkov@catalyst-au.net>
Date:   Mon, 31 Aug 2020 12:53:03 +0800
Tag:    v3.8.6

MDL-47178 question: Retain question authors when restoring backups.