To simplify the management of CentrED (issues, documentation, files, etc.) I setup a project repository. The normal CentrED website will also redirect there from now on.
You can find the new project page at http://redmine.aksdb.de/projects/show/centred (http://redmine.aksdb.de/projects/show/centred)
Feel free to contact me if you want to contribute and want write access to the wiki.