Git commits in Moodle 3.6.x by Paul Greidanus

commit 05f6ed003400522b189fb1f4766cd9fcc9cd2fd5
Author: Paul Greidanus <paul@moodle.com>
Date:   Fri, 03 Aug 2018 03:12:00 +0800
Tag:    v3.6.0-beta

MDL-63031 administration: Allow plugins to define trace storage