don't render page-viewer twice; last_post should actually get the last post posted, not the first one

app/controllers/people_controller.rb

@@ -110,7 +110,7 @@ class PeopleController < ApplicationController
 
   def last_post
     @person = Person.find_from_guid_or_username(params)
-    last_post = Post.visible_from_author(@person, current_user).last
+    last_post = Post.visible_from_author(@person, current_user).order('posts.created_at DESC').first
     redirect_to post_path(last_post)
   end
 

public/javascripts/app/router.js

@@ -39,8 +39,7 @@ app.Router = Backbone.Router.extend({
   },
 
   singlePost : function(id) {
-
-    var page = new app.pages.PostViewer({ id: id }).render();
+    var page = new app.pages.PostViewer({ id: id });
     $("#container").html(page.el);
    }
 });