Simplified, and de-duplicated many of the configuration settings.
Removed configuration settings that could be deduced from other settings.
Added some basic documentation.
Removed the (duplicate?) user email domain validation check in proxy.
Removed the ClientID middleware check.
Added a shared key option to be used as a PSK instead of using the IDPs ClientID and ClientSecret.
Removed the CookieSecure setting as we only support secure.
Added a letsencrypt script to generate a wildcard certificate.
Removed the argument in proxy's constructor that allowed arbitrary fucntions to be passed in as validators.
Updated proxy's authenticator client to match the server implementation of just using a PSK.
Moved debug-mode logging into the log package.
Removed unused approval prompt setting.
Fixed a bug where identity provider urls were hardcoded.
Removed a bunch of unit tests. There have been so many changes many of these tests don't make sense and will need to be re-thought.
