Meza/Setup SAML authentication

Step 1: Set secret config
Add the following to your secret config. See Meza/Secret config for info on editing this file. Pick good strong passwords and salt below. See comments.

Step 2: Set public config
Add the following to your public config, located at. Fill in appropriate values for everything. You'll need to confer with your SAML Identity Provider for correct values.

Step 3: Re-deploy
With the new config in place, you need to re-deploy your desired environment: