Update test reqs for Django with py3k support
Update test reqs for Django with py3k support

In near future we should support moar Djangos (and using
Travis for this).

unrealsolver/django-wkhtmltopdf,tclancy/django-wkhtmltopdf,powderflask/django-wkhtmltopdf,powderflask/django-wkhtmltopdf,fankcoder/django-wkhtmltopdf,incuna/django-wkhtmltopdf,denisbalyko/django-wkhtmltopdf,denisbalyko/django-wkhtmltopdf,halfnibble/django-wkhtmltopdf,incuna/django-wkhtmltopdf,fankcoder/django-wkhtmltopdf,halfnibble/django-wkhtmltopdf,unrealsolver/django-wkhtmltopdf,tclancy/django-wkhtmltopdf