When clicking on a tag in the book list, show books that have that tag assigned

[mbeko]

When clicking on a tag in the book list, nothing happens. In a book entry, this shows a list of books with that tag.

I find it confusing in general if something looks clickable, but has no effect. In this case, I thought it's a bug because clicking worked as expected in the other place.

Therefore, I'd like to request that clicking on a tag shows entries with that tag in both places.