Git commits in Moodle 2.2.7 by Ankit Agarwal

commit 4ad011d041d536d5051b275fdb9dad434816b6bf
Author: Ankit Agarwal <ankit@moodle.com>
Date:   Wed, 02 Jan 2013 13:59:31 +0800
Tag:    v2.2.7

MDL-27884 Implement proper username validation during csv import


commit 248eecdf15404720ee36df9d3120c27cd341c898
Author: Ankit Agarwal <ankit@moodle.com>
Date:   Thu, 01 Nov 2012 13:36:29 +0800
Tag:    v2.2.7

MDL-34520 gradebook: Missing droplow setting in gradebook backup


commit 53459511a96871583f6ed21517372b9bf4cbd96a
Author: Ankit Agarwal <ankit@moodle.com>
Date:   Mon, 25 Jun 2012 14:10:42 +0800
Tag:    v2.2.7

MDL-33340 completion: Incorrect logic in hidden field check