- no config overrides - now all set in environment
- use different files for staging and live too allow for differently named env variables
- updates to run_app and run_tests scripts to set correct environment (test/development) so correct config picked up
- use environment file on deployed environments to pick correct config
- initial versions kept it out of this class but updated as lots of duplication and errors as config
set up in multiple places and not all picking up credstash.
In there currently as wsgi has the credstash which we don't won't to apply in non-awe environments. This will need a refactor to better handle code duplication.
