Don't depend on insecure authentication to terminusdb

[matko]

Right now vectorlink is only able to communicate with terminusdb using the insecure user forwarding header mechanism. This is extremely risky and really limits valid deployment options to situations where both can be put in a safe data center behind a proxy.

Currently this is preventing us from having a production-ready docker-compose for terminusdb.

[alexander-mart]

@matko What exactly should we mean using the current docker-compose.yml in production?

[alexander-mart]

@matko ? )