Git commits in Moodle 3.8.6 by David Matamoros

commit f24a2515cb358eab9f52147f68235ec6949af3b2
Author: David Matamoros <davidmc@moodle.com>
Date:   Wed, 30 Sep 2020 18:03:44 +0800
Tag:    v3.8.6

MDL-69805 mod_data: Freeze comment field if comments disabled