model refactoring / asset handling - changed product to asset in participant definition - add service method add an asset to a participant definition - added tests Signed-off-by: Mark Hoffmann <m.hoffmann@data-in-motion.biz>
asset service - added asset service - added integration test - added transaction entry creation on asset change - refactored product service to use assets - add update owner for asset service Signed-off-by: Mark Hoffmann <m.hoffmann@data-in-motion.biz>