multi-language support

[heldersepu]

I guess it needs no explanation...
We should make it as easy as possible to translate to other languages

[BaNazari]

If we're gonna support a lot of languages in close future, then I think it should be handled from backend (with language jsons), and if not, a handful of languages can be implemented in frontend. This is also related to what we do for language support in website side. Right?

[marleymarl]

I think actually react-intl will do the trick for us. See https://www.youtube.com/watch?v=YrWRxs-lqj4 / https://www.npmjs.com/package/react-intl