Prices account tied to net terms

We should be able to set up net terms in the prices account. If an account is being issued 15 day terms vs using the prefunded model we should be able to note that on their account. On the 16th day if the full amount referenced on that bill has not been paid in shipedge their account should be marked as "low funds". This allows warehouses to issue terms but still be protected with acounts being automatically turned off vs needing to be monitored that individual accounts are within term limits.