Merge commit 'be991f1d18006a4820c1e9ca6625bf2bd2bfedac' into glitch-soc/merge-upstream

Conflicts:
- `app/models/form/admin_settings.rb`:
  Upstream added the notion of overriden settings, while we had extra code for
  pseudo-settings (only used to combine flavour and skin in a single select
  field).
  Ported upstream changes.
- `config/i18n-tasks.yml`:
  Upstream added `simple_form.overridden` to `ignore_unused`,
  we had `simple_form.glitch_only`.
  Added `simple_form.glitch_only` as well.

app/javascript/styles/mastodon/accounts.scss

@@ -188,6 +188,7 @@
 }
 
 .information-badge,
+.simple_form .overridden,
 .simple_form .recommended,
 .simple_form .not_recommended {
   display: inline-block;
@@ -204,6 +205,7 @@
 }
 
 .information-badge,
+.simple_form .overridden,
 .simple_form .recommended,
 .simple_form .not_recommended {
   background-color: rgba($ui-secondary-color, 0.1);

app/javascript/styles/mastodon/forms.scss

@@ -103,6 +103,7 @@ code {
         }
       }
 
+      .overridden,
       .recommended,
       .not_recommended {
         position: absolute;