Tax field expansion

Be able to use tax rates that are 4 digits long in the parts screen. (AKA .0175 or 1.75%)

Email from customer:
"Per our conversation a couple of weeks ago about expanding the mark-up field on the parts maintenance screen so that we could enter .0176% in the field without the last digit being dropped off, we added the request to a wish list, but my supervisor was wondering if this could be changed sooner rather than later or would it be a 4-6 month wait.

Our Finance Department would like the purchase orders to show 13% tax and on the parts charge out report .0176 %"

Imported from [WISH-6] Tax field expansion