Git commits in Moodle 2.8.4 by Ankit Agarwal

commit 8a15bcf7594820390ad1898c687470f3b4d3d79b
Author: Ankit Agarwal <ankit@moodle.com>
Date:   Thu, 19 Feb 2015 16:39:11 +0800
Tag:    v2.8.4

MDL-38485 calendar: Carry over line breaks on imports

commit 5219605a81b494c5bb6210ade3ea02d16b1c0d06
Author: Ankit Agarwal <ankit@moodle.com>
Date:   Thu, 12 Feb 2015 16:58:58 +0800
Tag:    v2.8.4

MDL-38466 filters: Redos protection and unit tests