finAccountTransactions Business Layer object; New method to fetch Transactions in Primary Key order

The finAccountTransactions Business Layer object now includes the function GetListByPk().

This returns a list of finAccountTransaction objects, being the transactions contained in the original object, but sorted by Pk rather than the correct order as presented by the finAccountTransactions collection class.

WARNING: Sorting by Pk will likely change the logical order of the transactions. Running balances and totals on the reordered transactions are not recalculated. Do not rely on any information in those fields when using the reordered transactions list.