To update the locale files, change to the rdmo directory inside the rdmo repository and run:

django-admin makemessages -a
django-admin makemessages -a -d djangojs

Then, edit the .po files in the locale directory. This can be done using Poedit, e.g.

poedit locale/de/LC_MESSAGES/django.po
poedit locale/de/LC_MESSAGES/djangojs.po

Afterwards run

django-admin compilemessages

to compile the .po file to a .mo file.