Merge branch 'release/0.29.0.5' into develop
pull in django-mptt, next-factorization code needs it.
ignore .css.map & gemfile.lock
Implement a dedicated cleaner for google URLs.
flake8 + pep257 happyness.
More doc.
Add the configuration model in base.
import models module instead of * from it.
model admin for configuration.
token protection decorator, based on configuration model.
Clean a tumblr hash location in url.
more docs.
first version of the content exporter (feeds/articles since a datetime).
open the exporter to the outside world.
Add sentry attributes to request.
flake8.
Sentry-fy the WSGI request (but it's not sufficient to get request.sentry).
More LOGGING configuration (and it still works… lucky).
Create a user import model to allow fully-backgrounded imports.
avoid circular imports.