Explicitly assigned classes to window.

@jrolfs 

Some classes were not being assigned explicitly to window (most were).  Not really a technical issue but it was throwing some documentation generation out of whack, see screenshot.
![screen shot 2014-11-17 at 11 57 49 am](https://cloud.githubusercontent.com/assets/5003903/5076587/fc5db438-6e50-11e4-8b66-85e21d5f2bc7.png)