Code review comment for lp:~milo/ubuntu-docs/italian-figures

Milo: Just for your information: Please be aware, due to extremely late changes related to the "Ubuntu Software Center" - "Software" - "Ubuntu Software" saga, we changed 3 of the default screenshots. unity.png, unity-overview.png and unity-windows.png were changed. They are the only 3 that showed the icon that has now changed back to what it used to be.