Convert settings.INSTALLED_APPS to list before concatenating django.
Convert settings.INSTALLED_APPS to list before concatenating django.

According to the Django documentation settings.INSTALLED_APPS is a
tuple. To go for sure that only list + list are concatenated,
settings.INSTALLED_APPS is converted to list type before adding
['django'].

tim-schilling/django-debug-toolbar,pevzi/django-debug-toolbar,megcunningham/django-debug-toolbar,spookylukey/django-debug-toolbar,django-debug-toolbar/django-debug-toolbar,stored/django-debug-toolbar,sidja/django-debug-toolbar,ivelum/django-debug-toolbar,stored/django-debug-toolbar,sidja/django-debug-toolbar,django-debug-toolbar/django-debug-toolbar,peap/django-debug-toolbar,pevzi/django-debug-toolbar,barseghyanartur/django-debug-toolbar,peap/django-debug-toolbar,jazzband/django-debug-toolbar,megcunningham/django-debug-toolbar,guilhermetavares/django-debug-toolbar,megcunningham/django-debug-toolbar,calvinpy/django-debug-toolbar,peap/django-debug-toolbar,spookylukey/django-debug-toolbar,ChristosChristofidis/django-debug-toolbar,seperman/django-debug-toolbar,tim-schilling/django-debug-toolbar,Endika/django-debug-toolbar,tim-schilling/django-debug-toolbar,ivelum/django-debug-toolbar,ChristosChristofidis/django-debug-toolbar,seperman/django-debug-toolbar,jazzband/django-debug-toolbar,calvinpy/django-debug-toolbar,ChristosChristofidis/django-debug-toolbar,barseghyanartur/django-debug-toolbar,barseghyanartur/django-debug-toolbar,spookylukey/django-debug-toolbar,ivelum/django-debug-toolbar,jazzband/django-debug-toolbar,django-debug-toolbar/django-debug-toolbar,Endika/django-debug-toolbar,guilhermetavares/django-debug-toolbar,Endika/django-debug-toolbar,stored/django-debug-toolbar,calvinpy/django-debug-toolbar,seperman/django-debug-toolbar,pevzi/django-debug-toolbar,guilhermetavares/django-debug-toolbar,sidja/django-debug-toolbar