Included tests and content_crypto module from Librarian
Use pytest to run tests
Added method to encrypt files and factored out common bits
Assume 'vagrant' is the app user in dev mode
Create keyring directory and make it appuser-owned
Added CLI action for importing keys
Forward port 8080 to 9090 so we can reach the app without SSH tunneling

This only applies to default config. In production we still use
127.0.0.1:8080 with SSH tunnel.
encryption must take a key argument
Separate config section for crypto stuff
Pass all additional parameters
Encrypt output files when keyring, key, and passphrase are set/passed
Removed debug stuff
Fixed big braino: *sign* not encrypt!
Merge branch 'feature/encryption' into develop