It's in the devV2 branch, in the lang folder. You have a combo-box to choose the branch in the top oh the files list, it defaults to master branch, that is the old version.
This version is made by a better dev than me :)
Ok found it, i will have a detailed look at it later and will notice you when the translation is done.
Hopefully u don't safe any of the API keys provided by users on your server ;)