FIX: only show edit reason when the user action is an EDIT

app/serializers/user_action_serializer.rb

@@ -66,7 +66,12 @@ class UserActionSerializer < ApplicationSerializer
     object.post_type == Post.types[:moderator_action]
   end
 
+  def edit_reason
+    object.edit_reason if object.action_type == UserAction::EDIT
+  end
+
   private
+
   def avatar_for(email, use_uploaded_avatar, uploaded_avatar_template, uploaded_avatar_id)
     # NOTE: id is required for cases where the template is blank (during initial population)
     User.new(