[Bug 849121] Try to stop non-AAQ locale questions.

* Removes the language switcher on AAQ pages.
* If the user manually changes languages via the url, redirect them back
  to English and show a warning.
* Set the entire AAQ to be noindex.

r?

![shot](https://f.cloud.github.com/assets/305049/1203124/6e9fca5a-254f-11e3-8b23-6bbd3c81b1f2.png)