Git commits in Moodle 3.1.2 by Kenneth Hendricks

commit d56d575df95712bfae798676b082b33f7aeedfcb
Author: Kenneth Hendricks <kennethhendricks@catalyst-au.net>
Date:   Wed, 17 Aug 2016 15:12:51 +0800
Tag:    v3.1.2

MDL-55605 mod_lesson: Fix activitylinks restore bug