[gumix]

I have just finalized in-memory game save with resume / clear UI. Also a small car icon is added to the map to indicate player's progress.

This allows me to keep interface w/o any confirmation message boxes which for me, personally, are rather irritating thing.

In this state (after exiting from gane with [Esc]) player can:
- navigate to any other module to change game options
- go back to the game (resume)
- reset saved game, to be able to start a new one with campaign tree UI