Logistics and Navies

[AlvaroSousa]

While looking over the game I realized that naval groups and logistics really don't make a difference.
They cost so much and already require shipyards and oil that logistics is not required.

I am now considering removing any naval groups from requiring logistics and adjusting the logistics of countries to match only land and air units.

Just an idea at this point. I just made the realization about this while testing Pacific.