Git commits in Moodle 3.0.6 by Kenneth Hendricks

commit 251752740b4c4247a8d689425e4d7d114e5dc792
Author: Kenneth Hendricks <kennethhendricks@catalyst-au.net>
Date:   Wed, 17 Aug 2016 15:12:51 +0800
Tag:    v3.0.6

MDL-55605 mod_lesson: Fix activitylinks restore bug