Facia tag and section pages

This changes tag pages and section pages to use the facia templates if you have the correct header. This is to ONLY keep it in line with the facia fronts. Nothing has been designed, decided upon etc.

I have picked the `top stories` template for the top of both, and `medium stories` template for the middle, and `small stories` template for the end.

The reason a Tag page looks weird at the moment is because it is using `top stories` for the lead content, which is always one. This will change to Masthead once it is finished, as this will support one item.

This will need further design and frontend touches.

# /environment (Section)
![sectionpage](https://f.cloud.github.com/assets/445472/1199666/b2e36166-2515-11e3-8ab2-e87667fb76d4.png)
# /politics/labour (Tag)
![tagpage](https://f.cloud.github.com/assets/445472/1199667/b2fcb134-2515-11e3-96ed-a344a8225974.png)
# /profile/peterwalker (Tag w/contributor)
![tagpageprofile](https://f.cloud.github.com/assets/445472/1199668/b2fd65f2-2515-11e3-9dd7-1466d15a7be7.png)