Handle werkzeug http errors separately. Also, improve the generic
`Exception` handler to be more flexible when exceptions don't look
like http errors.
note: because they're 405s the route isn't matched, so the v2 error
handlers don't trip properly. this might be an issue because the
internal endpoints expect a different return format. Might have to
think about how to handle this.
Since the response has changed I have created new endpoints so that the deployments for Admin are more managable.
Removed print statements from some tests.
