Add translations

[otacke]

I can add a German translation myself as soon as the UX review is done, but maybe someone reads this and can chip in more translations?

It's not difficult. All you need to do is use the file language/.en.json as a template, replace the text with appropriate translations and save it with a name reflecting the usual code for the language that you used, e.g. ru.json for Russian.

Yeah, that may still feel too complicated, right? You can also use https://translate-h5p.tk/ and use some of its nice features to translate this and many other H5P content types.