documentation fix: Game.LoadGame doesn't return anything
implement Game.EndGame()
add Game.SaveGame()
total wage / owed
Remove TimeStepUpdate from TerrainBody.
Add a static UpdateAllGeoSpheres() method to the GeoSphere class.
Call aforementioned from Pi::MainLoop().
Fixes bug #2301
Merge remote-tracking branch 'fluffyfreak/updateTerrain'
Merge remote-tracking branch 'jpab/lua-game-control'
Merge remote-tracking branch 'radius75/total'