Generate descriptive error messages during 'nvl setup...'

[tony-evans-enactus]

Received StatusCodeError: 400 - [object Object] when running nvl setup.... After some debugging the issue was that I had met part of the requirement for a complex password, but the password did not include a CAPITAL letter. The connect cli needs to notified the user with an error message other than the generic StatusCodeError: 400..... This will help not only with password strength issues, but all CLI errors.

The attached screenshot shows the generic error message.

This may also help resolve issue #52.

[henrjk]

Thanks to this issue, I could guess why my setup was not working without debugging this. But it took me some time before I started looking at issues...
Might be good to have some text in the Getting Starting docs if this is not easy to fix.

[christiansmith]

This is an important issue. It requires improvements to error messages on the server side as well.