Git commits in Moodle 3.1.3 by Ilya Tregubov

commit ff45fa7435ff0479b6d330be82f566d3c4059e9d
Author: Ilya Tregubov <ilya@catalyst-au.net>
Date:   Mon, 05 Sep 2016 14:16:40 +0800
Tag:    v3.1.3

MDL-55472 assign: Show userlist on extension form error page