Update example project to avoid errors on Django 1.7
Update example project to avoid errors on Django 1.7

ixc/django-fluent-contents,jpotterm/django-fluent-contents,django-fluent/django-fluent-contents,edoburu/django-fluent-contents,ixc/django-fluent-contents,jpotterm/django-fluent-contents,ixc/django-fluent-contents,edoburu/django-fluent-contents,edoburu/django-fluent-contents,django-fluent/django-fluent-contents,django-fluent/django-fluent-contents,jpotterm/django-fluent-contents