Cutout sizes

Various changes to cutout sizes including introducing them on media-lists.

![screen shot 2014-10-09 at 20 45 37](https://cloud.githubusercontent.com/assets/1607666/4582976/9bf4e8f4-4fed-11e4-83c9-cd970d78e2ae.png)

![screen shot 2014-10-09 at 20 45 53](https://cloud.githubusercontent.com/assets/1607666/4582977/9cd2c35e-4fed-11e4-99d1-549b15d30cce.png)

It's because we hide it for `fc-item--list` but need to show it for `fc-item--list-media`.

And at the moment, `fc-item--list-media` extends `fc-item--list` (via a mixin) and this class is set to `display: none !important;`