Replace KcmFontinst with kio_fonts

[Maks Orlovich]

> The settings are guessed by kio_fonts. The only things it needs to
> determine are the locationof /etc/fonts/fonts.conf and
> /etc/X11/XF86Config-4 - or wherever they really are. User installed fonts
> are *always* installed to ~/.fonts - this is the default for Fontconfig.

You're forgetting about XftConfig here. I don't think we can assume Xft2.