Use Weblate 2.19.1.

Dockerfile

@@ -50,7 +50,7 @@ RUN puppet apply --debug \
 RUN apt-get -y install rsyslog
 
 # Put Weblate's settings.py in place
-COPY weblate/settings_proposed_2.10.1.py /var/lib/weblate/config/settings.py
+COPY weblate/settings_proposed_2.19.1.py /var/lib/weblate/config/settings.py
 
 # Provide the Apache VirtualHost definition that runs in port 80. Note: SSL
 # is handled by tails::weblate::reverse_proxy and is configured elsewhere.