* First iteration of P2P rework
Changed frequency to short instead of long.
Added a per grid RNG to request a new frequency, hopefully without many collisons.
Added a helper to convert between a frequency and 4 colours
Reduces the visibility of all fields to private and create setters/getters
when necessary. Exceptions are fields with GuiSync as these need to be
public.
Reduces the visibility of internal methods to private/protected/default when possible.