3533 3534 Unassigned Fandoms filters updates

* Add the correct classes to the Unassigned Fandoms page so the filters appear floated to the right of the fandoms list - http://code.google.com/p/otwarchive/issues/detail?id=3533
* Turn the old Sort By buttons into a select menu on the filters - http://code.google.com/p/otwarchive/issues/detail?id=3534