Chore: Fixed some Form_Load function names as they were copied from old forms and were not neat.
Feature: Management BI Improved and should be pretty much solid by now.
BillInventory Renamed.
Refactored Bill to be more usable.
Added Bill Detail Report.
Added Open Bill and Bill Details Roles.
Zero Rate Products have Yellow background Color.
Refactored UserBI, FoodTableBI, ModifierBI, PrintLocationBI, ProductBI, ProductGroupBI, TaxBI, UserBI,
Cached the Products List.
Product and Product Group Form Working.