Simplify the Topic.__str__ method
Simplify the Topic.__str__ method

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