If the content settings specify their own post settings and override the
instance settings, a hint (and link to the content settings) is added to the
instance settings (infos) since that setting might introduce confusion (As
happened in #1677).
Threads/replies are now shown more clearly. Each reply has an indentation level
(and therefore the number of vertical lines) one more than its direct parent.
This leads to siblings having the same indentation level. It makes
understanding somewhat complex thread structures way easier. Previously, a
reply was only indented if it came directly after its parent. If a toot had
more than one reply, the structure was nearly indecipherable, as it wasn't
clear which the parent post of the second (or later) toot was. An example is
"https://mastodon.social/@mhoye/110452462852364819" and all of its replies.
Signed-off-by: Paul Schuetz <pa.schuetz@web.de>