Developer credits

Git commits in Moodle 2.2.3 by Rex Lorenzo

commit fd1e4d5039415ca1c9bd3f5704732e4feb6e994b
Author: Rex Lorenzo <rex@oid.ucla.edu>
Date:   Thu, 03 May 2012 10:08:51 +0800
Tag:    v2.2.3

MDL-32670 mod/chat: also added missing call to ->set_heading in report.php

commit ceb66eb1fd19e85f2036b4b518fb55f2db7bfca8
Author: Rex Lorenzo <rex@oid.ucla.edu>
Date:   Sat, 28 Apr 2012 07:02:38 +0800
Tag:    v2.2.3

MDL-32670 mod/chat: added missing call to $PAGE->set_heading