FIX: incorrect localization in flagging dialog

- only happens when multiple locales enabled

app/serializers/site_serializer.rb

@@ -28,13 +28,13 @@ class SiteSerializer < ApplicationSerializer
   end
 
   def post_action_types
-    cache_fragment("post_action_types") do
+    cache_fragment("post_action_types_#{I18n.locale}") do
       ActiveModel::ArraySerializer.new(PostActionType.ordered).as_json
     end
   end
 
   def topic_flag_types
-    cache_fragment("post_action_flag_types") do
+    cache_fragment("post_action_flag_types_#{I18n.locale}") do
       flags = PostActionType.ordered.where(name_key: ['inappropriate', 'spam', 'notify_moderators'])
       ActiveModel::ArraySerializer.new(flags, each_serializer: TopicFlagTypeSerializer).as_json
     end