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

Conflicts:
- `README.md`:
  Our README.md files are completely different. Discarded upstream changes.
- `app/javascript/core/admin.js`:
  Updating rails-ujs, no real conflict, but a comment to close to changed
  code. Various glitch-soc-only files have been updated to match those changes,
  though.
- `package.json`:
  No real conflict, just an additional dependency in glitch-soc that was too
  close to something updated upstream. Took upstream's changes.

app/models/account.rb

@@ -46,6 +46,7 @@
 #  silenced_at             :datetime
 #  suspended_at            :datetime
 #  trust_level             :integer
+#  hide_collections        :boolean
 #
 
 class Account < ApplicationRecord
@@ -325,6 +326,14 @@ class Account < ApplicationRecord
     save!
   end
 
+  def hides_followers?
+    hide_collections? || user_hides_network?
+  end
+
+  def hides_following?
+    hide_collections? || user_hides_network?
+  end
+
   def object_type
     :person
   end