Asset manager refactor begin.

tools/assetstool/processasset.py

@@ -1,6 +1,6 @@
 import sys
 # from processtileset import processTileset
-# from processimage import processPalette, processImage
+from processimage import processImage
 from processpalette import processPalette
 
 processedAssets = []
@@ -15,8 +15,8 @@ def processAsset(asset):
   t = asset['type'].lower()
   if t == 'palette':
     return processPalette(asset)
-  # elif t == 'image':
-  #   return processImage(asset)
+  elif t == 'image':
+    return processImage(asset)
   # elif t == 'tileset':
   #   return processTileset(asset)
   else: