Osra197 show view on cancel edit

Feature specs and controller changes to get cancelling edit returning to show page for partner, orphan and sponsor.
Cucumber is not failing you ..... because something very interesting indeed happens.
when you click on the edit link from the show page the cancel button html is
```
<a href="http://localhost:3000/admin/orphans/3">Cancel</a>
```
All perfectly respectable
If you call the url directly active admin returns some javascript abomination
```
<a href="javascript:history.back()">Cancel</a>
```
Capybara can't run javascript without the @javascript tag (or other tag that will use a javascript webdriver)
Regardless, after adding the tag, the test fails anyway because calling `javacript.history.back()` when coming from the root url does not return us to the show view.