Add missing span info tag around help text.

[Closes #3546]
Style fix for guest checkout label and radio options.

- page: admin/orders/{order.number}/customer
- issue: colon was left out of styling and 'Yes' and 'No' had no
styling nor label.

[Closes #3545]
Bumped CSS Browser Selector to 0.6.2

Also js linted.

[Closes #3543]
expand order number field size to 32