This repo contains Tampermonkey's locale files
You can get Tampermonkey here: http://tampermonkey.net
If you want to contribute then this userscript might help you:
After installing the script you will see a button Adjust to English translation at the button bar of each message.json file. After clicking at this button the page will be replaced by the current locale file plus all missing translations. Missing translations will be wrapped by angle bracket like this:
"Dont_ask_again": {
"message": ">>>Don't ask again<<<"
},
After translating the missing content you can either create a pull request or just send me the translation to kontakt at tampermonkey.net