Hi Jonas,
sorry for not answering before, for some reason I missed your initial post. Thanks a lot for volunteering on leading the Danish Translation!

Right now we don't have a Danish translation. In order to start it in pootle, we would need a properties file for Danish Language. Would you be able to start it? It doesn't need to be complete, just something to start with (maybe around 100 translated keys) and then you can go on translating in Pootle.
The file should be called Language_da.properties and it would be a copy of the Language.properties with the keys translated to Danish. You can obtain the latest Language.properties from here:
Language.properties in githubOnce you have your initial translation ready with some keys translated, you can upload the file in
this ticket in JIRA, assign it to you and click on the "Contribute Solution" button. (Alternatively, you could make me a pull request if you are familiar with git). After that, we will update Pootle with this file and you can go on using Pootle for the translation as with any other language.
Let me know if there is anything else I can do to help you!
cheers!