Fix empty logs

[jscheidtmann]

Some logs didn't get stored in the log file, due to an issue with Multiproc logger.

Along the way:

• Silence warnings in VScode, that are catched by nox.
  • ruff complaining about _ not being defined.
  • flagging of comments in json
  • pylance also complaining about _
• Fix an exception in comet processing
• Using a dynamic path to the PiFinder_data directory, so the log tab in the website is able to read the current log file.

TODOs:

• Test on physical PiFinder unit.

---

• main
  • Fix empty logs 👈
    • Server: Back off reading logs in the log tab on error #403
      • webserver: Upload and choose log configuration #404

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