Removing pinning of pep8 and upgrade pyflakes
Removing pinning of pep8 and upgrade pyflakes

Zopieux/django-blog-zinnia,ghachey/django-blog-zinnia,Fantomas42/django-blog-zinnia,ghachey/django-blog-zinnia,Zopieux/django-blog-zinnia,ghachey/django-blog-zinnia,Fantomas42/django-blog-zinnia,Fantomas42/django-blog-zinnia,Zopieux/django-blog-zinnia