Move ports configuration to soledad server configuration file
Currently, the configuration of ports which soledad listen on are passed to the application through environment variables set in the systemd service file. This is inconvenient because other soledad server configurations are read from a configuration file in /etc
.
It would make deployment easier if all configurations would be in the server configuration file. It would also help in the future when we want to only listen on localhost and delegate TLS and tunelling to something like nginx.
We should also move the certificate and TLS version configurations (all related to the port config) to the server config file.