Add `role="button"` to all elements that act like a button

The 'Start now' buttons on all start pages are actually links styled to look like buttons. This means that to Assistive Technology (AT), which reads the document based on its HTML rather than its visuals, they are declared as something different to their appearance.

Léonie Watson suggested adding the 'role' attribute, set to 'button', which should give a better experience to users of AT

![](https://s3.amazonaws.com/f.cl.ly/items/2l2C1F3M0p1o3C3j3v02/Screen%20Shot%202014-12-08%20at%2011.46.46.png)

![](https://s3.amazonaws.com/f.cl.ly/items/1g3M2X3K1F1D3N1c2J1B/Screen%20Shot%202014-12-08%20at%2011.38.44.png)

All anchor links and inputs (with type="submit") will now get role="button" which should resolve our zendesk ticket here https://govuk.zendesk.com/agent/tickets/877103 and the user formats story here https://www.agileplannerapp.com/boards/105200/cards/8691