Modified tests to be independent on no/installed Person Account. (part 1)
Modified tests to be independent on no/installed Person Account. (part 1)

Part 1: Only renamed all "Account" to "Contact" in test_integration.py
        (to be part 2 smaller and more readable)

philchristensen/django-salesforce,chromakey/django-salesforce,django-salesforce/django-salesforce,hynekcer/django-salesforce,philchristensen/django-salesforce,hynekcer/django-salesforce,chromakey/django-salesforce,chromakey/django-salesforce,django-salesforce/django-salesforce,django-salesforce/django-salesforce,philchristensen/django-salesforce,hynekcer/django-salesforce