Combine Clients; Business Layer objects changed

The Business Layer objects behind the Client Combine wizard have been renamed to make them more generic.

The following changes have been made:

finClientMergeItem has been replaced with finCompareItem.
finClientMergeItems has been replaced with finCompareItems.

This means the finClientMerge.MergeItems now returns a finCompareItems collection, and each item in that collection is a finCompareItem object.