Developer credits
Git commits in Moodle 2.2.5 by Matt Meisberger
commit 83985d7856597962518bd1402f03e6e881c89b57 Author: Matt Meisberger <mmeisberger@webcourseworks.com> Date: Mon, 06 Aug 2012 04:06:04 +0800 Tag: v2.2.5 MDL-34742 - adding ability to move blocks into empty column