Git commits in Moodle 3.5.13 by Bence Molnar

commit e4f5c4127b0c609c653227a769532c3869155b0e
Author: Bence Molnar <epititk@epito.bme.hu>
Date:   Tue, 19 May 2020 04:04:36 +0800
Tag:    v3.5.13

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