Review design of about:tor in Tails

In #21224 (closed), we moved fast to be on time for the YEC and we skipped a bunch of design discussions.

We should have them after %Tails_7.1

TODO

• Message rotation

  Do we want to integrate the release notes message and the newsletter message in the usual rotation or always display both?

• Design of the double newsletter

  Comment from @henry:

  I'm not a designer, but the triangle of three links at the bottom is visually strange. And there isn't much of a link between the "Get the latest news" and the links underneath. What about combing it all into one sentence:

  Get the latest <a>Tails news</a> or <a>Tor news</a> straight to your inbox.

• Layout of "Tor check"

  Comment from @henry:

  Can you use the home-message class instead, so there isn't repeated styling blocks?

  Also, why only a 0.6em gap, rather than 1.6em like the existing messages?

• Phrasing of "Tor check"

  Comment from @henry:

  I'm not sure if "Tor check" is sufficiently clear to a user what this actually does. E.g. "Check your Tor connection" would be clearer.

  Has there been any UX input on this part?

Current design

Outside of Tails	Inside of Tails