filter import updated to Django recommended syntax, changed to decorator, and only filter user field if authenticated
filter import updated to Django recommended syntax, changed to decorator, and only filter user field if authenticated

rossp/django-helpdesk,rossp/django-helpdesk,django-helpdesk/django-helpdesk,gwasser/django-helpdesk,gwasser/django-helpdesk,django-helpdesk/django-helpdesk,rossp/django-helpdesk,gwasser/django-helpdesk,rossp/django-helpdesk,django-helpdesk/django-helpdesk,gwasser/django-helpdesk,django-helpdesk/django-helpdesk