Fucking EU Cookies
Django
https://github.com/TyMaszWeb/django-cookie-law
Leonardo CMS
https://github.com/leonardo-modules/leonardo-cookie-law
Czech version
https://github.com/jakubboucek/fucking-eu-cookies
Cookieconsent
I use http://sitebeam.net/cookieconsent-v1/code/ which has many options to configure design and functionality. For example basic IP location which allows you to showing this shit only for people from EU.
note: It's not bootstrap ready.