Different entry points to the main menu

[ufdada]

Currently we only really support the starting entry point to the main menu with it's screen. But not for things like the debriefing, my pet dungeon, skirmish and multiplayer.

Since it seems in DK2 it is always the same point where the player leaves the main menu, maybe they originally kept the state in RAM and just continued.

[tonihele]

Our main menu state is persistent as well. The map selection not so anymore (it doesn't hold the selected map if you change game mode). And player selection is now on separate state too. Everything else might be already done except the camera position. And saving the last screen we were on. Should be doable quite easy, maybe :)