Git commits in Moodle 3.8.3 by Jwalit Shah

commit 51c65d7bc543a2a4890c190901442f41af576832
Author: Jwalit Shah <jwalitshah@catalyst-au.net>
Date:   Fri, 27 Mar 2020 09:15:45 +0800
Tag:    v3.8.3

MDL-66035 message: Restore missing message preferences files


commit 305060c055b5502d7a3d23d0437cc3b66a840d3c
Author: Jwalit Shah <jwalitshah@catalyst-au.net>
Date:   Fri, 13 Dec 2019 11:15:31 +0800
Tag:    v3.8.3

MDL-66200 gradebook: check selected feedback option when importing data