Un-hardcodes pip/tag/group palettes.

-Palette for decorations can now be defined under SelectionDecorations trait.
-Adds pip types Ammo and AmmoEmpty.
-LimitedAmmo PipTypes are now customizable.
-Adds art, sequences and rules entries for TS mod decorations that were missing/using a wrong palette.
-Adds PrimaryBuilding trait to TS weapon factories and helipads.

OpenRA.Game/Traits/TraitsInterfaces.cs

@@ -21,7 +21,7 @@ using OpenRA.Primitives;
 namespace OpenRA.Traits
 {
 	// depends on the order of pips in WorldRenderer.cs!
-	public enum PipType { Transparent, Green, Yellow, Red, Gray, Blue };
+	public enum PipType { Transparent, Green, Yellow, Red, Gray, Blue, Ammo, AmmoEmpty };
 	public enum TagType { None, Fake, Primary };
 	public enum Stance { Enemy, Neutral, Ally };