New magic base tarball, systemd removed from cockpit-deps.

Hi, I have uploaded a new magic base tarball for Fedora 20 here: http://mvo.fedorapeople.org/cockpit/ There is also now a workaround for the logind bug in Cockpit master, and I have removed systemd from cockpit-deps. (Only UDisks2 left, yay!) Thus, to do verification, you need to download the new base tarball, run PREPARE from Cockpit master, and move the new images into your $TEST_DATA.