Edited Feature: ColorPicker: Allow to sort color / Sort color differently [18700]

Based on Discussion:
 
http://wpftoolkit.codeplex.com/discussions/257235
 
There seems to be a need to sort the "standard colors" differently.
Comments: ** Comment from web user: BoucherS **

A new property will be added in v2.2 : ColorPicker.AvailableColorsSortingMode which will be
-Alphabetical
-HueSaturationBrightness

2 different modes of Color sort.