Commercial component, from DFP using capi and image

This creates a commercial component that is created in DFP via a template and then uses the CAPI to pull in the articles. The compoennt title, "bought to you by" logo, logo link and "about this content" link are also passed through from DFP.

Uses code from special container and so has lovely flex-box stuff going on.

cc @kenlim for the Scala stuff.

![screen shot 2014-10-21 at 16 56 09](https://cloud.githubusercontent.com/assets/1303616/4721831/401ed8b2-593b-11e4-8458-24b22942c332.png)

Whats going on here? a child element of a modifier? surely it should just be the child element of the object and use the modifier to change in css: i.e.
```.ad-slot--paid-for-badge .ad-slot__inner```