Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `README.md`:
  Upstream README has been changed, but we have a completely different one.
  Kept our `README.md`.
- `lib/sanitize_ext/sanitize_config.rb`:
  Upstream added support for more incoming HTML tags (a large subset of what
  glitch-soc accepts).
  Change the code style to match upstream's but otherwise do not change our
  code.
- `spec/lib/sanitize_config_spec.rb`:
  Upstream added support for more incoming HTML tags (a large subset of what
  glitch-soc accepts).
  Kept our version, since the tests are mostly glitch-soc's, except for cases
  which are purposefuly different.

app/models/status.rb

@@ -237,6 +237,16 @@ class Status < ApplicationRecord
     public_visibility? || unlisted_visibility?
   end
 
+  def translatable?
+    translate_target_locale = I18n.locale.to_s.split(/[_-]/).first
+
+    distributable? &&
+      content.present? &&
+      language != translate_target_locale &&
+      TranslationService.configured? &&
+      TranslationService.configured.supported?(language, translate_target_locale)
+  end
+
   alias sign? distributable?
 
   def with_media?