For fuck's sake. Show *only* the langSelect page.
langSelect screen should show up once only

Cookies wasn't having the path set. So if a user entered on a post or
    page, the langSelect screen would be shown but it would only be in
    effect for that post or page. A visit to any other webpage on the
    site would throw up the langSelect screen again and again until
    the index was hit.
This fixes that.