Merge remote-tracking branch 'origin/master' into gs-master

Conflicts:
 	app/serializers/initial_state_serializer.rb

The glitch flavour isn't yet pulling custom emoji data on its own (see
https://github.com/tootsuite/mastodon/pull/7047).  Once that gets into
the glitch flavour, we can eliminate the custom_emojis load.

app/lib/user_settings_decorator.rb

@@ -93,7 +93,7 @@ class UserSettingsDecorator
   end
 
   def boolean_cast_setting(key)
-    settings[key] == '1'
+    ActiveModel::Type::Boolean.new.cast(settings[key])
   end
 
   def coerced_settings(key)
@@ -101,7 +101,7 @@ class UserSettingsDecorator
   end
 
   def coerce_values(params_hash)
-    params_hash.transform_values { |x| x == '1' }
+    params_hash.transform_values { |x| ActiveModel::Type::Boolean.new.cast(x) }
   end
 
   def change?(key)