Add backwards compatibility with old settings.
Add backwards compatibility with old settings.

derek-adair/django-ajax-uploader,skoczen/django-ajax-uploader,skoczen/django-ajax-uploader,brilliant-org/django-ajax-uploader,derek-adair/django-ajax-uploader,brilliant-org/django-ajax-uploader,brilliant-org/django-ajax-uploader,derek-adair/django-ajax-uploader