Git commits in Moodle 3.7.7 by Bence Molnar

commit 3d9e7a3071c512b27f0fa64596c658bedfef4f42
Author: Bence Molnar <epititk@epito.bme.hu>
Date:   Tue, 19 May 2020 04:04:36 +0800
Tag:    v3.7.7

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