Developer credits

Git commits in Moodle x.x.x by Tony Lin

commit 6faa78c93569e6ea17b18c826902b8f95c260a93
Author: Tony Lin <tony.lin@open.ac.uk>
Date:   Thu, 03 Nov 2016 19:35:25 +0800
Tag:    v3.1.3

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

commit ce1249be58f630560f84755220a180281064887d
Author: Tony Lin <tony.lin@open.ac.uk>
Date:   Thu, 03 Nov 2016 19:35:25 +0800
Tag:    v3.2.0-beta

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

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