Developer credits

Git commits in Moodle 2.5.4 by Mark Nelson

commit c90c329d570b5d8e6b2ddd066ca58a390c8d2f83
Author: Mark Nelson <markn@moodle.com>
Date:   Sat, 30 Nov 2013 06:25:45 +0800
Tag:    v2.5.4

MDL-43140 mnet: display header after redirects to avoid warning

commit 6d5aa15b8d6edb1d2c57a66151722d0c650da947
Author: Mark Nelson <markn@moodle.com>
Date:   Sat, 30 Nov 2013 06:12:09 +0800
Tag:    v2.5.4

MDL-43142 mnet: fixed typo in variable passed to get_string

commit 44a9508cb9111c03ee2f85b757ae0ba2c9ad0e32
Author: Mark Nelson <markn@moodle.com>
Date:   Wed, 27 Nov 2013 13:26:03 +0800
Tag:    v2.5.4

MDL-42885 tool_uploaduser: removed misleading debugging message

commit 68cc921a375c1c95cc41ddfb7262d9e8eaa79598
Author: Mark Nelson <markn@moodle.com>
Date:   Thu, 14 Nov 2013 09:25:48 +0800
Tag:    v2.5.4

MDL-42547 tool_uploaduser: trim values before uploading users

commit 49875e3a890f20ecec8fcf461ac6db9324c1db05
Author: Mark Nelson <markn@moodle.com>
Date:   Fri, 25 Oct 2013 18:04:45 +0800
Tag:    v2.5.4

MDL-42276 core_group: added behat tests to automate group actions