[Weblate] Update Django 1.11.x -> 2.2.y
We use currently use Django 1.11.26 but we could switch to 2.2.y, as both versions are supported by Weblate.Django has currently two LTS versions
- 1.11 is supported until April 2020
- 2.2 is supported until April 2022 (because if CVE-2019-19118, we should install 2.2.y with y > 7)
Weblate 4.0 won't support 1.11 anymore, what is scedulaed for Aplit next year see weblate#2201.
We need to check what new depdendencies of Django 2.2 needs to be added to puppet.