Use os.path.join for path operations to avoid trailing slashes

[michael-hoss]

When I set my own paths in GeneralConfiguration using os.path.join commands, there won't be trailing /, e.g.

own_paths = GeneralConfiguration(
    path_scenarios=get_own_scenarios_dir(),
    path_scenarios_batch=os.path.join(get_own_scenarios_dir(), "batch"),
    path_output_abs=os.path.join(get_own_root(), "data/crime_outputs"),
    path_logs=os.path.join(get_own_root(), "data/crime_outputs/logs"),
    path_icons=os.path.join(get_local_crime_root(), "docs/icons"),
)

However, without the trailing /, the path concatenation in the properties path_scenario or path_output breaks.

Hence, I suggest avoiding trailing / (as these would get eliminated in os.path.normpath, too), and using os.path.join whenever possible.

Are there further locations that would need adaptation?