[Merge] lp:~renatofilho/address-book-app/keyboard-navigation into lp:address-book-app

[Bill Filler]

Review: Needs Fixing

In edit mode, tab key and arrow keys should navigate to the Add Field button and Delete buttons, currently these are skipped in the navigation.
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https://code.launchpad.net/~renatofilho/address-book-app/keyboard-navigation/+merge/277176
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