NF11 Tax Rate Tab in Tax Category

Goal: Functional

Developer: Zuhri Utama

Feature Ticket: IDEMPIERE-4648

Description

1. It would be useful to have a tab Tax Rate in the Tax Category window.
2. This would make it easier to work with tax rates because they are already appropriately filtered .
3. I also think it should be easier for newbies to understand the logic of the taxation setup if the tabs were organized that way.