Following #210408, make the href of the "in all languages" link point to the correct URL.
Made obsolete due to the dropped requirement for rendering "all languages" in the server side (for now).
We render a hash as href.
The consequence being: we render a link on the server side that, if not enhanced through client-side code, is without functionality. One option that comes to mind to mitigate this could be to hide the link when rendered on the server - but even this has to be "done right"...