Live blog right hand story package

This introduces a story package in the right hand column of the live blog template, to increase onward journeys.

Also temporarily fixes a bug of featured comments clashing in the left hand column with  key events, as discussed with Theresa and Cantlin.

![screenshot from 2014-05-06 13 07 03](https://cloud.githubusercontent.com/assets/80089/2889178/91760666-d517-11e3-8de0-5ecdc7a43d97.png)