[Merge] lp:~renatofilho/address-book-app/fix-1511478 into lp:address-book-app

[Renato Araujo Oliveira Filho]

The image object switches btw the "+" icon and the avatar itself. 

When set to the avatar image we can make it invisible because it will be used by UbuntuShape (check UbuntuShape.source for more info) when visible it will show "+" icon and we want the icon in 3x3 size, to fit to designer spec.
 
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https://code.launchpad.net/~renatofilho/address-book-app/fix-1511478/+merge/276167
Your team Ubuntu Phablet Team is requested to review the proposed merge of lp:~renatofilho/address-book-app/fix-1511478 into lp:address-book-app.