Tests added for the signal receiver used to update tracking data
Tests added for the signal receiver used to update tracking data

ellmetha/django-machina,franga2000/django-machina,ellmetha/django-machina,franga2000/django-machina,reinbach/django-machina,franga2000/django-machina,ellmetha/django-machina,reinbach/django-machina,reinbach/django-machina