Sending NotifyAllNewTXsCmd will register websocket client to receive
notifications on all new transactions.
Once registered the client will receive either AllTxNtfn or
AllVerboseTxNtfn based on the required verbose field in the
NotifyAllNewTXsCmd.
The createencryptedwallet extension RPC request should not be used to
create wallets for additional accounts. Instead, all btcwallet
accounts should use the same passphrase as the default account's
wallet. This change removes the account name and description
parameters from createencryptedwallet, as it will only be used to
create the default account.
