Remove annoying prints
Rework fullscreen/shade handling.

The former was broken in a previous commit, the latter is now properly
introduced (as shaded windows still report the same geometry, we handle
them as we do fullscreen windows - not).
Comment out moveStep handling

This currently does nothing useful (the outline is shown, but flickers
terribly), so don't waste the users CPU.
Fix setting clients to floating

The issue was that we never got a tile when the signals were
launched (this could have caused other issues as well).
Update documentation