Business Layer; finAccount.GetUnclearedFunds function updated

The Business Layer function finAccount.GetUnclearedFunds has been updated to use the following logic:

unclearedFunds returns:

If dateAsAt = Nothing (or unspecified)
Incoming Payments made on/before today but are uncleared as at today are included.
ALL future incoming payments are also included as Uncleared.

If dateAsAt specified
Incoming Payments made on/before dateAsAt but are uncleared as at dateAsAt are included.
Future Incoming Payments are NOT included.

Previously, if a date was specified, future payments (i.e. dated after dateAsAt) were always included as uncleared. This does not make sense when using this function with a past date.