Large advertisement feature MPU

https://www.google.com/dfp/59666047#delivery/CreateCreativeTemplate/creativeTemplateId=10028127

![screen shot 2014-11-26 at 18 02 58](https://cloud.githubusercontent.com/assets/74132/5206172/8452ed26-7596-11e4-9aa1-5caee9ae25ed.png)
There is no scale for sans headline - https://github.com/guardian/guss-typography#user-content-nota-bene

If it's being used enough, maybe it's about time we looked into creating one