Git commits in Moodle 3.1.16 by Michael Hawkins

commit 3d2783690da2281e5e360c40961cd6846e1dbbb8
Author: Michael Hawkins <michaelh@moodle.com>
Date:   Thu, 20 Dec 2018 10:11:23 +0800
Tag:    v3.1.16

MDL-64395 groups: Added XSS Risk to the manage groups capability

commit 3681c247f5a18d96e78919594c4408cc315f7ad7
Author: Michael Hawkins <michaelh@moodle.com>
Date:   Tue, 11 Dec 2018 14:27:13 +0800
Tag:    v3.1.16

MDL-64372 userpix: Escape fullname string on userpix index page