use redirect_to_login instead of HttpResponseRedirect in get_403_or_None

Using redirect_to_login facilitates correct interpretation of settings.LOGIN_URL when it is a class (views.login) instead of path (/login). This matches functionality in django-braces. Without this change the redirect will send you to the wrong page ie: /views.login/?next=/delete/1/.
I agree with this, but this will require code in the testapps urls.py. That same code will not work with anything < Django 1.3 I believe. So then the question becomes how do you support older versions?