* Also restructured the converter script so it handles
  mixed (gap and source code) export files as well
* Added a sad hack that enables using a base url

* removing prospector as it is not compatible with latest version of flake8
* introducting a new CI job that runs flake8 and actually fails if there are any errors

To enable the pre-commit checks first run pip -Ur requierements.txt to install pre-commit. Next run pre-commit install to install the hook in your .git/hooks folder. Running pre-commit will now run prospector on all new or modified files in the backend/ directory (see pre-commit-scripts/prospector.sh for the arguments that are used). If you get an error saying prospector not found or smth. make sure you have the venvv activated or prospector installed globally.

Not working!

also removed unused arguments in delber.py that prospector didn't like