Modify CSS classes on past foreign secretaries page to ensure correct al...

...ignment

Before:
![screen shot 2014-09-26 at 16 02 20](https://cloud.githubusercontent.com/assets/5455804/4422667/534cbe2e-458e-11e4-9c2c-b0be5d8323f6.png)


After:
![screen shot 2014-09-26 at 16 03 22](https://cloud.githubusercontent.com/assets/5455804/4422669/572455d4-458e-11e4-800f-0af8e870c308.png)