Update no-JS version of the download page to removal of NoScript icon
Originally created by @sajolida on #16801 (Redmine)
In the no-JS version of our download page, we instruct people to enable JS for this tab only:
In Tor Browser 8.5 the NoScript widget has been removed by default:
https://trac.torproject.org/projects/tor/ticket/30626
We should document to add it back before being able to enable JS for this tab only.