Git commits in Moodle 3.1.8 by Dani Palou

commit 62be5f6154a01e1df599f7cd57e7295b6b7ec0c6
Author: Dani Palou <dani@moodle.com>
Date:   Tue, 04 Jul 2017 16:21:21 +0800
Tag:    v3.1.8

MDL-59068 lesson: Revert MDL-54849