Add missing fields in TransactionDescriptionString and others
Add missing fields in TransactionDescriptionString and others

Fields involvesWatchonly, generated, walletconflicts were missing
in result description of listtransactions, listsinceblock,
gettransaction

Align getttransaction fields which were odd compare to other rpc
helpers


Former-commit-id: 332318bdf72a209d7895ee5901afab31f6de5cd5
syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin,syscoin/syscoin