Lightbox open rate dashboard graph

Much easier to make omniture reports, now that we can use pre-defined segment ids.

![screen shot 2014-09-04 at 18 22 10](https://cloud.githubusercontent.com/assets/4549425/4153443/bc2ef61a-3458-11e4-90f0-48f6c5fe98d1.png)

Better to give these IDs names rather than a comment?