Improve <title> on Diffusion pages

Test Plan:
Visit /rX123.
Visit /diffusion/X/.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran

Differential Revision: https://secure.phabricator.com/D1463

src/applications/diffusion/controller/repository/DiffusionRepositoryController.php

@@ -1,7 +1,7 @@
 <?php
 
 /*
- * Copyright 2011 Facebook, Inc.
+ * Copyright 2012 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -106,7 +106,7 @@ class DiffusionRepositoryController extends DiffusionController {
     return $this->buildStandardPageResponse(
       $content,
       array(
-        'title' => 'Diffusion',
+        'title' => $drequest->getRepository()->getName(),
       ));
   }