Client Addresses; added new function in Business Layer to return an address based upon the Contact Method

A new function has been added to the finPOWER Connect Business Layer to return a Client address based upon a Contact Method.

The new function is finClient.ContactAddresses.GetCurrentAddress. It has parameters of ContactMethodId, DateAsAt, PhysicalAddress and PostalAddress to limit the address returned.

Note, this function always returns a finClientContactAddress object. The "IsNew" property will be True if an address was not found, given the parameters used.