imported local copy of PEAR/Archive/Zip
added basic print stylesheet for registration
mostly completed new REST API
database schema changed !!! -> introduction rev
added upgrade script
improved README a bit for users without "make" ;-)
extracted Messages into generic common JS lib
implemented user management as HTML/JS/REST app
added draft implementation of federated login link
added support for Facebook
cleaned up user-bar (only valid links, role)
fixed error when response was empty
updated policy to deny basic users to update
added more flexible handling of ContentType(s)
added support for generating activation email
updated TODO