Git commits in Moodle 4.0.0 by Tim Schroeder

commit a7e1f4ebc07d499f8ca843f6430a6d613f686572
Author: Tim Schroeder <t.schroeder@itc.rwth-aachen.de>
Date:   Tue, 03 Nov 2020 18:53:32 +0800
Tag:    v4.0.0-beta

MDL-70110 assign: fixed ws get_submissions for groups


commit 8e0423d9a52a15ab103d1676599c8792f7461179
Author: Tim Schroeder <t.schroeder@itc.rwth-aachen.de>
Date:   Fri, 17 Apr 2020 03:40:01 +0800
Tag:    v4.0.0-beta

MDL-68438 message: fixed email format change with messaging disabled