Git commits in Moodle 3.4.0 by Dani Palou

commit 18f3d7667b8cb8160e389767ee38586836e8b518
Author: Dani Palou <dani@moodle.com>
Date:   Tue, 04 Jul 2017 16:18:00 +0800
Tag:    v3.4.0-beta

MDL-59068 lesson: Revert MDL-54849