Enable tests to run with Django >= 1.7 and silence warnings
Enable tests to run with Django >= 1.7 and silence warnings

tclancy/django-wkhtmltopdf,incuna/django-wkhtmltopdf,halfnibble/django-wkhtmltopdf,halfnibble/django-wkhtmltopdf,incuna/django-wkhtmltopdf,tclancy/django-wkhtmltopdf