[Design snags]

- Fix padding of content__section on live blogs at the RightCol breakpoint
-Increase hover state to white on media social icons

### Before
![google chrome](https://cloud.githubusercontent.com/assets/80089/3932858/2dd86a12-2473-11e4-8c5e-f13a504da4b2.png)

### After
![google chrome](https://cloud.githubusercontent.com/assets/80089/3932857/2aaa2e7a-2473-11e4-9fc1-996a667c3671.png)
That should probably be set on `social__action:hover` (and :focus) to be tabbable and avoid conflicts between the two hover states.