Accessibility fixes for zendesk

Addressing issues in [spreadsheet](https://docs.google.com/a/moneyadviceservice.org.uk/spreadsheet/ccc?key=0AljVeoaWSM6pdDhzZ25XaE44OHpVQm1ueFJFR09vRXc&usp=drive_web#gid=0):

* 11
* 23 (partial fix - requires more from other repos)
* 14