Fronts masthead variations

Finished styling news and feature articles

![desktop-2 copy](https://f.cloud.github.com/assets/74132/985281/78526dd6-08b8-11e3-9aef-fef4a6df2845.png)
![tablet-3 copy](https://f.cloud.github.com/assets/74132/985282/7a37738a-08b8-11e3-8816-61c359c57ee4.png)
![wide-4 copy](https://f.cloud.github.com/assets/74132/985283/7badacc0-08b8-11e3-9ceb-fa9c8fca165d.png)