[tga]

Since you are already using Django, you could try Django CMS.

https://www.django-cms.org

It does support internationalization and you will be able to reuse your templates and integrate Django apps into your pages.

http://docs.django-cms.org/en/latest/advanced/i18n.html

[gaellelo]

Do you use it yourself? If so what are your favorite features and where do you see room for improvement?