This module makes importing data from CSV files optional for each user, allowing it only for those users belonging to a specific group.
[FIX] Solved flake8 error E305: expected 2 blank lines after class or function definition, found 1
[FIX] Renamed base_import_csv_optional in base_import_security_group
[FIX] Solved flake8 error E501: line too long;
[FIX] Removed unnecessary monkeypatch and extended Base.load method;
[FIX] Bugfixing in Base.load method;
[FIX] Code refactoring
[IMP] Tests created