Git commits in Moodle 2.8.4 by Zachary Durber

commit c9e9862ed64bd1e4c10a474a0ad7c796501e5e49
Author: Zachary Durber <zdurber@gmail.com>
Date:   Tue, 24 Feb 2015 12:14:15 +0800
Tag:    v2.8.4

MDL-23273 mod_choice: error continue button redirects back to choice


commit a455f2fa45aa7ec2e8a7f52b02972223fb6479bb
Author: Zachary Durber <zdurber@gmail.com>
Date:   Thu, 19 Feb 2015 14:18:33 +0800
Tag:    v2.8.4

MDL-23273 mod_choice: Using locks to ensure choice limits


commit 07f99ca6d693a89f4629e7a95fedb24246003cbc
Author: Zachary Durber <zdurber@gmail.com>
Date:   Wed, 28 Jan 2015 13:55:45 +0800
Tag:    v2.8.4

MDL-31036 mod_assign: Don't strip quickgrading feedback of special chars


commit 1b249517781dbb49aa19040d7bb6d446d325bf8e
Author: Zachary Durber <zdurber@gmail.com>
Date:   Mon, 05 Jan 2015 11:01:34 +0800
Tag:    v2.8.4

MDL-38466 filters: ReDoS protection for text to URL conversion.


commit ad4d28ff7668b103bb3234bca949eb740f8c8a9a
Author: Zachary Durber <zdurber@gmail.com>
Date:   Mon, 15 Dec 2014 09:58:29 +0800
Tag:    v2.8.4

MDL-35392 mod_assign: Push feedback to gradebook when releasing grades