Cashshop Additional Function

I think this will be very useful to most server administrator who have Cashshop as their primary shop in-game

Suggesting to add a function to reduce a % deduction to all cashshop like a promo so us administrator don't need to manually set the price according to our promo if we have this system.

either in Toolkit Editor or Cashshop.xml

;----------------------------------------------------------------------
;-- Defines whether to enable promo 1/0 on/off
;----------------------------------------------------------------------
PromoSystemEnable = 0

;----------------------------------------------------------------------
;-- Defines the percentage of the promo - Max is 100%
;-- % is the deduction from the original price of the item
;----------------------------------------------------------------------

CashshopPromo = 80