Git commits in Moodle 3.9.0 by Bence Molnar

commit 9024289626a690096f323f1c87f175bccd7c1f43
Author: Bence Molnar <epititk@epito.bme.hu>
Date:   Tue, 19 May 2020 04:04:36 +0800
Tag:    v3.9.0-beta

MDL-68733 quiz editing: be more careful deleting random question tags