Better display of author view with books in differents languages
In https://github.com/openzim/gutenberg/issues/350, @kelson42 suggested we should enhance the author view (list of books of a given author).
Most of it has already been done in https://github.com/openzim/gutenberg/pull/356, but it has been suggested we might want to group author books by book language.
I'm not convinced at all. First because we do have situations where a book has two languages associated. Not sure how we would present that case.
We should probably start by finding a case where a author has many books in different languages and see if there is a real display issue with the new UI (I assume there is no issue with authors which have few books, even in multiple languages, UI is already very lean).