Update unit tests for new style configuration

mutalyzer/config/__init__.py

mutalyzer/config/default_settings.py

tests/test_crossmap.py

tests/test_describe.py

tests/test_grammar.py

tests/test_mapping.py

tests/test_mutator.py

tests/test_parsers_genbank.py

tests/test_services_json.py

tests/test_services_soap.py

tests/test_variantchecker.py

tests/test_website.py

tests/utils.py