fix cookbook sorting to include version numbers

:fork_and_knife: 

Previously, this sorting was only done on cookbook name and the versions were all out of order.  Now it's sorted by name first, and version in semver order after that.

Screenshot:
![](https://dl.dropboxusercontent.com/s/7019q8k4fluqr7t/2014-08-28%20at%204.22%20PM%202x.png?dl=0)