Git commits in Moodle 3.1.0 by Jonathon Fowler

commit 26670f5ee963547a7e16b7079ee704d8c668d7e1
Author: Jonathon Fowler <fowlerj@usq.edu.au>
Date:   Mon, 12 Oct 2015 10:50:33 +0800
Tag:    v3.1.0-beta

MDL-44598 assign: improve 'grant extension' form to show user names