Git commits in Moodle 2.8.4 by Matt Switlik

commit 4f9ccc21d8be2efac54e18a1f4370d6cb8a1d3b6
Author: Matt Switlik <switlik@oakland.edu>
Date:   Thu, 29 Jan 2015 06:03:29 +0800
Tag:    v2.8.4

MDL-48991 gradebook: Properly import multiple new grade items