Updated to support library 1.4 tag

- Add support for OpenID with oauth_authorization_codes.id_token
- Add support for JWT with new table oauth_jwt, removal of client_id NOT
NULL on code/token tables
- Add support for storing/verifying a users' email
- Cleaned up spacing
- Should match https://github.com/bshaffer/oauth2-server-php/tree/v1.4