Whoops. Also rename these forms' sprites to match.

Whoops.  Also rename these forms' sprites to match.

Also fix shikijika, mebukijika, and genosekuto's alt-form icons, even
though they aren't used anywhere, and fix their cropped sprites.

... Also fix basurao's entries in the pokemon_form_sprites table.
Apparently pokemon_form_sprites isn't for form sprites, but for what
Eevee calls """sprite forms""".  So the form names are form names, and
not just for image filenames.  So the space versus hyphen matters for
flavour page links.