Visualize progress of processsing graphically

[MichaelLangbein]

Logs are being read by frontend now. A few items remaining:

• Seems to not pick up on logs from wrappers (probably just a bad regex)
• Provide a start- and stop-script to start logging with multilog at the same time as starting the docker-containers
• Currently, when a user logs in, his credentials are verified against not only fastapi, but also the logs-server. But the user should be allowed to log in even if the credentials for the logs-server are incorrect.