Add ?include_raw parameter to topic views

app/controllers/topics_controller.rb

@@ -441,7 +441,7 @@ class TopicsController < ApplicationController
   end
 
   def perform_show_response
-    topic_view_serializer = TopicViewSerializer.new(@topic_view, scope: guardian, root: false)
+    topic_view_serializer = TopicViewSerializer.new(@topic_view, scope: guardian, root: false, include_raw: !!params[:include_raw])
 
     respond_to do |format|
       format.html do

app/serializers/post_stream_serializer_mixin.rb

@@ -21,6 +21,7 @@ module PostStreamSerializerMixin
       object.posts.each_with_index do |p, idx|
         highest_number_in_posts = p.post_number if p.post_number > highest_number_in_posts
         ps = PostSerializer.new(p, scope: scope, root: false)
+        ps.add_raw = true if @options[:include_raw]
         ps.topic_view = object
         p.topic = object.topic