Added grouping of items in sidebar + correct clock placement

Items in the sidebar are now grouped by their type and one of each item in the group can be 'built' at a time. Clock animation is now drawn on the items that are being built. Build time still not implemented. Behaviour after item built not correct.

OpenRa.Game/TechTree/TechTree.cs

@@ -41,7 +41,7 @@ namespace OpenRa.TechTree
 
 		IEnumerable<Tuple<string, string, bool>> Lines(string filename, bool param)
 		{
-			Regex pattern = new Regex(@"^(\w+),([\w ]+)$");
+			Regex pattern = new Regex(@"^(\w+),([\w ]+),(\w+)$");
 			foreach (string s in File.ReadAllLines("../../../../" + filename))
 			{
 				Match m = pattern.Match(s);