def nested_comments(messages)
      messages.map do |message, sub_messages|
        @comment = message
        render('roroacms/admin/partials/comment') + content_tag(:div, nested_comments(sub_messages), :class => "nested_comments")
      end.join.html_safe
    end
def nested_comments(messages)
      messages.map do |message, sub_messages|
        @comment = message
        render('roroacms/admin/partials/comment') + content_tag(:div, nested_comments(sub_messages), :class => "nested_comments")
      end.join.html_safe
    end
Returns the html for the comments tree of a post
 Params:
 +messages+:: all of the messages for the post