HotA interface improvements.

It would be very helpful to have a button to kick out random players who join the game as a host. There are always brainless individuals who don't want to leave voluntarily. Or, alternatively, add a keyboard shortcut to kick out a player who has joined...

Also, I personally think it would be useful to be able to scroll the map when it's your turn, even when the "end turn" button is flashing, but scrolling is disabled. On smaller timers, this would be a nice way to take some time to think about what to do next...