Update Rails to 3.2.17 as per CVE-2014-0082   pt: [#66791216]

http://bit.ly/1jMxbjU
https://www.pivotaltracker.com/story/show/66791216
Start transitioning NavMenu to coffeescript.

part of [#64495050]

https://www.pivotaltracker.com/story/show/64495050
Convert Navigation Menu to coffeescript. Convert tests to coffeescript.

Make menu easier to dismiss by clicking background.

Get tests running and passing again.  [#64495050]

https://www.pivotaltracker.com/story/show/64495050
Navigation menu: add arrow and bar toggle handles [#64495050]

https://www.pivotaltracker.com/story/show/64495050
Navigation menu: add arrow and bar toggle handles [#64495050]

https://www.pivotaltracker.com/story/show/64495050