* Update readme for eb server.
Update the README with new way of handling secrets.
Update portions that were out of date.
Add a section for Authentication and a placeholder for User Annotations.
Also remove an obsolete function that processes the AWS secrets.
#1522
Co-authored-by: Madison Dunitz <madison.dunitz@chanzuckerberg.com>
* split out config
* add tests for base and app config, refactor client config out of app config
* refactor default config retrieval
* create config test class and helper functions
* move default_config into server to fix import issue