When I have new photos available in my shared photo streams, the iPhoto icon in the dock has a red circle with a number in it, also known as a "Badge App Icon".
I went to System Preferences -> Notifications -> Photo Stream and disabled everything, but the badge app icon on iPhoto still shows.
For now I have disabled shared photo streams completely from iPhoto -> Preferences, and that has removed the badge app icon, but I would prefer to still keep it enabled.
How can I disable this badge app icon?