Use tokenList.json to get tokens

[deanpress]

Describe the solution you'd like and the expected behavior

Right now a token transfer is displayed as Transfer X {scriptHash} to {address}?, this should be Transfer X {ticker} to {address}?

This can be done by using tokenList.json from https://github.com/nos/neo-tokens to find the corresponding ticker by a script hash (and vice-versa), so that the "send" dialog triggered by nos.send() can display the token ticker rather than the full script hash in the prompt.