Mobile flyers

- styles for base rich-links (not upgraded) and for mobile flyers.

![image](https://cloud.githubusercontent.com/assets/960919/5373894/7a867b8e-8052-11e4-9980-38e25fc9b3d3.png)

![image](https://cloud.githubusercontent.com/assets/960919/5373917/a739b254-8052-11e4-9181-d8212b68f3a9.png)

could pop `gs-span(3)` in here too