Git commits in Moodle 2.8.3 by Marina Glancy

commit d08b45781f4956dc3adfe13e28cd077ade7225a6
Author: Marina Glancy <marina@moodle.com>
Date:   Wed, 28 Jan 2015 16:47:50 +0800
Tag:    v2.8.3

MDL-48978 user: fixed regression from MDL-37704

commit a9bac80cace3bd95da7419a1769172c85154d748
Author: Marina Glancy <marina@moodle.com>
Date:   Thu, 15 Jan 2015 11:12:01 +0800
Tag:    v2.8.3

MDL-48847 groups: fixed incorrect user count