Git commits in Moodle 3.8.x by Nicolas Dunand

commit 713934f9b471d790899d73cf5063a2a82ac0973b
Author: Nicolas Dunand <nico@kolya.ch>
Date:   Wed, 26 Sep 2018 14:50:10 +0800
Tag:    v3.8.0-beta

MDL-63458 core_user: Remove send message if messaging is disabled