Git commits in Moodle 3.8.x by Mahmoud.Kassaei

commit 1d89daf3295740d1cfe924e8405c220e89176848
Author: Mahmoud.Kassaei <mk4359@open.ac.uk>
Date:   Tue, 20 Aug 2019 23:44:09 +0800
Tag:    v3.8.0-beta

MDL-66563 Questions: Drag and Drop qtypes in high-contrast