Allow editing of POS purchase to link to student account after sale is complete.

I mistakenly forgot to add a student's name on a recent POS purchase until after the credit card transaction was completed. There is currently no way to link the sale to the student account afterward. Under 'Orders' for the order history, there is an option to print or trash an order. It seems like an ideal spot to also add an 'edit' feature that would allow you to link to a student or parent account post-sale.