Add a user preference to choose how comments/replies are displayed: in chronological or reverse chronological order (#589, #776).

git-svn-id: http://redmine.rubyforge.org/svn/trunk@1197 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/messages_controller.rb

@@ -29,6 +29,8 @@ class MessagesController < ApplicationController
 
   # Show a topic and its replies
   def show
+    @replies = @topic.children
+    @replies.reverse! if User.current.wants_comments_in_reverse_order?
     @reply = Message.new(:subject => "RE: #{@message.subject}")
     render :action => "show", :layout => false if request.xhr?
   end