Ubercart Order Company Search

A hacky module that adds a Company search field to the user-lookup in the beginning of the Ubercart admin order creation process. Because of the way Ubercart creates that form, it's not easy to add to, so I just overrode it entirely (by copying the function and adding to it, and telling Ubercart to use my function instead of it's own). It's working great right now (with UC 2.4), so maybe it will be useful for others.