UI stuff is remote desktop stuff (Spice, VNC) and input stuff (mouse,
keyboard).

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NMarkus Armbruster <armbru@redhat.com>
Message-Id: <1503602048-12268-9-git-send-email-armbru@redhat.com>
Reviewed-by: NMarc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: NGerd Hoffmann <kraxel@redhat.com>