Some fixes for running the unit tests

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