Swap space for nbsp

So that the 'x' doesn't end up an orphan on a newline
Make labels in scrolly checks wider

So that they have a wider click target make the labels 91% width. This is a best approximation of a better width as different browsers do different things with scroll-bars which means that wider can lead to text being chopped off.
Merge pull request #58 from alphagov/make-labels-wider

Make labels in scrolly checks wider
Merge pull request #57 from alphagov/add-nbsp

Swap space for nbsp