Fix security hash formatting errors on bad requests.
Fix security hash formatting errors on bad requests.

PetrDlouhy/django-fluent-comments,akszydelko/django-fluent-comments,PetrDlouhy/django-fluent-comments,django-fluent/django-fluent-comments,django-fluent/django-fluent-comments,akszydelko/django-fluent-comments,PetrDlouhy/django-fluent-comments,akszydelko/django-fluent-comments,edoburu/django-fluent-comments,edoburu/django-fluent-comments,BangorUniversity/django-fluent-comments,django-fluent/django-fluent-comments,BangorUniversity/django-fluent-comments,django-fluent/django-fluent-comments,BangorUniversity/django-fluent-comments,edoburu/django-fluent-comments