Remember bank when recording payments

When recording check payments from non-CNB banks (pocket checks that the clients wrote, outside of Agillink), the system currently requires that you select a bank account for each check, so if you're recording a month's worth of payments, you're selecting a bank account for each check.

It would be helpful if the Bank dropdown was "sticky", meaning it remembered the last bank you worked with until you change it manually. Ideally, it would not interfere with the system recognizing CNB-checks, which automatically selects the appropriate bank.