Use https://crowdin.com/ for translations

I just used https://crowdin.com/ to help translate a project and this platform is great. I am familiar with git and source code editors, but translating in an editor is harder than it has to be.

There is the ability to use this for free for open source projects: the speed in which translations can be completed is very quick.
Translations can be upvoted, commented and compared to other languages.