avoid passing a lazy string to urlparse
avoid passing a lazy string to urlparse

urlparse does not support reverse_lazy as url arg.
Much like Django bug [#18776](https://code.djangoproject.com/ticket/18776),
urlparse will fail with `AttributeError: '__proxy__' object has no
attribute 'decode'` if the url arg is from reverse_lazy.

pinax/django-user-accounts,pinax/django-user-accounts