Git commits in Moodle 3.0.7 by Tony Lin

commit 8d68bbd484d6c51b3731af8f039cd975810211ef
Author: Tony Lin <tony.lin@open.ac.uk>
Date:   Thu, 03 Nov 2016 19:35:25 +0800
Tag:    v3.0.7

MDL-56731 groups: Fixes breadcrumb when returning to groups/index.php