Feedback over email:
Create this list of translations inside your app, maybe pre-translate all the strings, but let your users rename each according on their needs.
That way you have both sides, multilingual option with premade translations and the option for us to improve those translations.
Another thing i dont see is compartmentalizing the translations, i just have 2 languages, english and spanish, if everyone can see everyone ideas is going to be a mess of languages. You should Compartmentalize so one dont see the other or apply automatic translations on each.
I hope this help, thanks.