ui redraw on UIlist actions and code cleanup

2.0.9

- fix: prefix/suffix UIlist actions trigger UI redraw to see changes live
- changed: PropertyGroups are now registered in their own file
- code: cleanup

utils.py

@@ -16,6 +16,10 @@ import subprocess
     else :
         return layer.parent
  """
+
+def translate_range(OldValue, OldMin, OldMax, NewMax, NewMin):
+    return (((OldValue - OldMin) * (NewMax - NewMin)) / (OldMax - OldMin)) + NewMin
+
 def get_matrix(ob) :
     '''return a copy of the world_matrix, applied object matrix if its a bone'''
     if isinstance(ob, bpy.types.PoseBone) :