Allow changing the map from the lobby.
Refactored DropDown to be nifty.
I'm an idiot
Randomize the first player.
Mines now remove the shield upgrade from pawns.
New maps, rename existing ones.

hex_3p-f2 => shelter-3p (looks like a fallout shelter symbol)
hex_2p-pinch => pinch-2p
christmas-3p (it looks like christmas!)
arena-3p (small 3p map, with a black hole to make it exciting)