Git commits in Moodle 3.4.5 by Luke Carrier

commit b939f7092223c96249a2f3e8084239aa8446df64
Author: Luke Carrier <luke@carrier.im>
Date:   Thu, 18 Jan 2018 19:54:28 +0800
Tag:    v3.4.5

MDL-61238 cohort: require_once all libraries