Merge branch 'debian/sid' into debian/stretch-backports

* debian/sid:
  releasing package python-django version 1:1.11.5-1
  CVE-2017-12794: New upstream security release. (Closes: #874415) <https://docs.djangoproject.com/en/dev/releases/1.11.5/>
  New upstream version 1.11.5
  Follow DEP-14's recommendation & consistent branch branch names.