Git commits in Moodle 3.1.x by Kenneth Hendricks

commit c4d310361fafc996f3b1f245e47b09ba08ab3a5c
Author: Kenneth Hendricks <kennethhendricks@catalyst-au.net>
Date:   Wed, 02 Nov 2016 10:15:07 +0800
Tag:    v3.1.4

MDL-56674 core: Fix test_get_all_observers

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