This mostly serves to provide cleaner and more consistent field
naming. maxMove currently doesn't have boosts or effects to group
together but who knows what will be thrown at us via DLC, and being
symmetrical with zMoves is a nice.
The server now uses the same approach as the client of treating
cosmetic formes as real formes, as documented in `FORMES.md`.
This eliminates the need for the `.forme` and `.speciesid` properties
of `Pokemon`.
`pokemon.id` has also been removed: useful, since it turns out half
of its uses were bugs that should have used `pokemon.species.id`.
