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

...ignment

The alignment got broken when Philip Hammond was added as new foreign secretary
without taking care of the "clear-person" class on the items below.

https://www.agileplannerapp.com/boards/105200/cards/6108

Because a picture is worth a thousand words...

Before this patch:
![screen shot 2014-09-26 at 16 02 20](https://cloud.githubusercontent.com/assets/5455804/4422667/534cbe2e-458e-11e4-9c2c-b0be5d8323f6.png)

After this patch:
![screen shot 2014-09-26 at 16 03 22](https://cloud.githubusercontent.com/assets/5455804/4422669/572455d4-458e-11e4-800f-0af8e870c308.png)