Add SECRET_KEY to the test settings.
Add SECRET_KEY to the test settings.

Running without a SECRET_KEY becomes a DeprecationWarning in Django 1.4,
and will start raising an ImproperlyConfigured error in Django 1.5.

Details: https://docs.djangoproject.com/en/1.4/releases/1.4/#secret-key-setting-is-required

pjdelport/django-analytical,machtfit/django-analytical,ericdwang/django-analytical,bittner/django-analytical,jcassee/django-analytical,apocquet/django-analytical,ChristosChristofidis/django-analytical