[backend] Layout customer page fix.

- page: admin/orders/{order.number}/customer
- issue: colon was left out of styling and 'Yes' and 'No' had no
styling nor label.

It need this css also for extra tweak but no clue where to place it, i use it in my admin override style.

```css
.field ul li label {
    text-transform: uppercase;
    font-weight: 600;
}
```

![screen shot 2013-08-12 at 05 27 32](https://f.cloud.github.com/assets/66969/945257/306ecae6-02ff-11e3-8425-31bb994b3719.png)