appDisplay: Animate opening app icons menu
Fixes #2335 (closed)
But I'm not sure if I should do more digging and try to find out if it's due to something changing with PopupMenu / BoxPointer and if we need to change it there. (But that would also be a bit more dangerous)
I'm also not sure why it's not needed for the close animation. Well the animation
is rather quick, not even to sure it's animating on close.
Edited by Kolja Lampe