Add Category Field to the Velocity Report

We have a large number of products. We store and mange the in categories. When ordering or reordering product we want to be able to do this in category order.  

This is a very simple feature but it does allow simple management of inventory and aligns the velocity report more closely to the how a company works in the real world. 

Most Dear reports have a category field availabe PLEASE add the Category fiend here as urgently as possible as it us very difficult to managing ordering without it.