moved inner classes out of UnitInfo for brevity. added money-up and money-down sounds. added slow view of money changes, like real-ra.

OpenRa.Game/UiOverlay.cs

@@ -43,7 +43,7 @@ namespace OpenRa.Game
 							spriteRenderer.DrawSprite(unitDebug, Game.CellSize * new float2(i, j), 0);
 		}
 
-		public void DrawBuildingGrid( UnitInfo.BuildingInfo bi )
+		public void DrawBuildingGrid( BuildingInfo bi )
 		{
 			var position = Game.controller.MousePosition.ToInt2();
 			var isCloseEnough = Game.IsCloseEnoughToBase(Game.LocalPlayer, bi, position);