SDDM change pushed back to Fedora 21

As the Fedora 20 final change deadline is upon us, we tried, but were unable to make sddm login manager as shiny, bug-free, and featureful enough to continue to use it by default (for kde).  So, in our kde-sig meeting this morning, we made the hard decision to implement our contingency plan, to revert to the tried-and-true kdm default again.

Best wishes for an even better and more polished sddm for Fedora 21.