Commercial masterclasses highcont

This creates a Masterclasses high relevance component. There has also been some simplification of the shared styles for all the commercial components to try and stop bloat.

Component created;

![screen shot 2014-06-03 at 14 52 34](https://cloud.githubusercontent.com/assets/1303616/3160905/6551ac0a-eb26-11e3-86f0-e8f644d3a750.png)