NEVERHOOD: Fix bug #6480 "NEVERHOOD: Car glitches"
NEVERHOOD: Fix palette fading

The palette didn't fade all the way to white when using the
shrinking machine, which caused visible glitches. I've verified
against a YouTube "Let's Play" that in the original it did fade
all the way. Whether or not it did it in this exact way I do not
know, but... close enough.
NEVERHOOD: Minor adjustment to original load/delete dialogs

This makes space for one additional savegame slot, giving them the
same number of slots as the original save dialog. I can't compare
to the original, but it arguably looks better this way.