Job Save button redirects to Job Show

Hi,

A very very simple bug fix. The save button is supposed to send you to the Show screen, but it goes to the Identify screen. This works when saving an edited job, but not when saving a new job. The method is supposed to look at the "nextStep" param to know where to redirect it. The `save()` method did this, but the  `create()` method didn't.

So I added it.

@JonathanShaw or @terenceingram  please merge if I haven't done anything really silly. ;)

Huw.