Basic styles of documentation

* Style documentation nav links
* Move search bar to partial
* Reduce spacing in doc nav items
* Refactor individual doc files

![screen shot 2014-11-09 at 7 22 25 pm](https://cloud.githubusercontent.com/assets/3300569/4970721/d7f9dd1a-6888-11e4-926f-748888160229.png)

https://trello.com/c/7cYuLORT
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