Show money spent from each fund in an invoice voucher/print-out

Show money spent from each fund in an invoice voucher/print-out

In the (near) future, we really ought to use a library like Money::Currency
and refactor any Acq code that uses floating-point math.  It's conceivable
that numeric type fields in the acq schema need reviewed (should some of them be
something like numeric(8,2) ?)

git-svn-id: svn://svn.open-ils.org/ILS/trunk@18583 dcc99617-32d9-48b4-a31d-7c20da2025e4