Fix bug 1363320: Properly compose tab URLs
Fix bug 1363320: Properly compose tab URLs

mastizada/pontoon,mozilla/pontoon,mathjazz/pontoon,mathjazz/pontoon,mathjazz/pontoon,mozilla/pontoon,mastizada/pontoon,jotes/pontoon,mozilla/pontoon,mozilla/pontoon,jotes/pontoon,mathjazz/pontoon,jotes/pontoon,mozilla/pontoon,mathjazz/pontoon,jotes/pontoon,mastizada/pontoon,mastizada/pontoon