www/py-django-registration: update to 1.0

• Update to 1.0 [1]
• Trim Makefile header [1]
• Use single space in WWW [1]
• Use CHEESESHOP mirror [2]

PR: ports/181756
Submitted by: Kozlov Sergey <kozlov.sergey.404 gmail.com> [1]
Approved by: maintainer [2]