Redirect 2019.torproject.org download pages to the new website
Some people following some links on our website end up on the old download pages at https://2019.www.torproject.org/projects/torbrowser.html.en or https://2019.www.torproject.org/download/download-easy.html.en or https://2019.www.torproject.org/download/download.html.en and are confused by a page showing an old tor browser version.
I think we should redirect those URLs to the new download page to avoid this.