update developer commentary

for weapon traits, crates and palettes
clarify that you don't need to update the wiki page manually

OpenRA.Mods.RA/PaletteFromCurrentTileset.cs

@@ -13,9 +13,12 @@ using OpenRA.Traits;
 
 namespace OpenRA.Mods.RA
 {
+	[Desc("Loads the palette specified in the tileset definition")]
 	class PaletteFromCurrentTilesetInfo : ITraitInfo
 	{
+		[Desc("internal palette name")]
 		public readonly string Name = null;
+		[Desc("Map listed indices to shadow. Ignores previous color.")]
 		public readonly int[] ShadowIndex = { };
 		public readonly bool AllowModifiers = true;