No longer create tables for unnecessary applications when running the GeoDjango test suite.

    old_installed = settings.INSTALLED_APPS

    old_root_urlconf = settings.ROOT_URLCONF

    # Based on ALWAYS_INSTALLED_APPS from django test suite --

    # this prevents us from creating tables in our test database

    # from locally installed apps.

    new_installed =  ['django.contrib.contenttypes',

                      'django.contrib.auth',

                      'django.contrib.sites',

    # Overridding the INSTALLED_APPS with only what we need,

    # to prevent unnecessary database table creation.

    new_installed =  ['django.contrib.sites',

                      'django.contrib.sitemaps',

                      'django.contrib.flatpages',

                      'django.contrib.gis',

                      'django.contrib.redirects',

                      'django.contrib.sessions',

                      'django.contrib.comments',

                      'django.contrib.admin',

                      ]

    # Setting the URLs.