Rewrite our warnings page

Our warning page didn’t change much in years. Still, are we are trying to make Tails more accessible to new users, it would deserve some simplification. Let’s do that!

Baseline: 6a165db0

2077 wiki/src/doc/about/warning.mdwn

On ecebc7fb

215 wiki/src/doc/about/warnings.html
509 wiki/src/doc/about/warnings/computer.html
 37 wiki/src/doc/about/warnings/computer.inline.html
305 wiki/src/doc/about/warnings/identity.html
 40 wiki/src/doc/about/warnings/identity.inline.html
562 wiki/src/doc/about/warnings/tor.html
 47 wiki/src/doc/about/warnings/tor.inline.html

1715 total