comments: use server-side quote-stripping instead of reimplementing in js.

app/models/comment.rb

@@ -249,6 +249,10 @@ class Comment < ActiveRecord::Base
   def undelete!
     update({ :is_deleted => false }, :as => CurrentUser.role)
   end
+
+  def quoted_response
+    DText.quote(body, creator_name)
+  end
 end
 
 Comment.connection.extend(PostgresExtensions)

app/models/forum_post.rb

@@ -234,8 +234,7 @@ class ForumPost < ActiveRecord::Base
   end
 
   def quoted_response
-    stripped_body = DText.strip_blocks(body, "quote")
-    "[quote]\n#{creator_name} said:\n\n#{stripped_body}\n[/quote]\n\n"
+    DText.quote(body, creator_name)
   end
 
   def forum_topic_page