Document NoScript setup
Originally created by @BitingBird on #7033 (Redmine)
https://tails.boum.org/doc/anonymous_internet/Tor_Browser/index.en.html#index5h1 and/or https://tails.boum.org/contribute/design/#index40h3 should explain that NoScript is shipped but desactivated by default, and explain why. It’s documented nowhere, and the question pops up often.