Streamline the backend logging

...dex/dataimport/management/commands/fake_worker_version.py

arkindex/dataimport/management/commands/import_s3.py

...taimport/management/commands/update_repositories_hooks.py

...ataimport/management/commands/update_repositories_refs.py

...dex/dataimport/tests/commands/test_fake_worker_version.py

arkindex/documents/api/entities.py

arkindex/documents/api/ml.py

arkindex/documents/management/commands/delete.py

arkindex/documents/management/commands/gunicorn.py

arkindex/documents/management/commands/load_export.py

arkindex/documents/models.py

arkindex/images/management/commands/check_images.py

arkindex/project/aws.py

arkindex/project/permissions.py

arkindex/project/settings.py

arkindex/project/tests/test_aws_mixin.py

arkindex/users/serializers.py