Project Costing: enable attachment of documents on the "Define Asset" page

Permit users to add attachments of supporting documentation on the Project Costing "Define Asset" transaction execution.  This provides audit justification related to how the various transactions are related, authorized, and defined as an "asset set". 

Users would have a central repository collection of the supporting justification, decisions, and analysis as to WHY a group of project costing transactions were selected and authorized to be defined as an "asset set".

Thanks.