Git commits in Moodle x.x.x by Derek Henderson

commit a8fe168e08a302a170e935d3629b988813f6cf1e
Author: Derek Henderson <derek.henderson@remote-learner.net>
Date:   Wed, 11 Jan 2017 04:08:17 +0800
Tag:    v3.4.0-beta

MDL-55652 grades: Added timemodified as index grade tables