Facia tool: ophan links & snap wording

* add back links to ophan graphs
* change UI wording from "snap" to "special link"

![screen shot 2014-10-21 at 15 46 17](https://cloud.githubusercontent.com/assets/1147913/4720446/1be8c16a-5931-11e4-9669-dd41831fb272.png)