Git commits in Moodle 3.1.16 by Sara Arjona

commit bbaf0525f476b1c1b42518ce2bbca9cc2821ab41
Author: Sara Arjona <sara@moodle.com>
Date:   Fri, 11 Jan 2019 00:51:37 +0800
Tag:    v3.1.16

weekly release 3.1.15+

commit 7013fe50b59faa7143b275553bd586507030ca42
Author: Sara Arjona <sara@moodle.com>
Date:   Tue, 27 Nov 2018 18:05:31 +0800
Tag:    v3.1.16

MDL-64222 badge: Removed backpackurl from the edit_form