Supports strict JSON formats, fix basic authentication issues, general error message improvements

[darrensapalo]

Issues addressed

Strict JSON formats

Some third party services are very strict about their JSON definitions, not allowing fields to be enclosed by ' and require " instead. Some also don't like JSON arrays with a trailing , at the last element.

We fixed this by making sure we use quotation marks " for fields and values, as well as removing trailing commas on the last element of a JSON array.

Readability for basic authentication

Improved readability for how the basic authentication is calculated. Future implementations can implemented different authz options here.

General exception improvements

Instead of having "uh oh something went wrong", improved error messaging.