3D Carousel prototype

Based on the gesture graph in the "swipe.cpp" test. Need to figure out how to
create a transition from the end of the list to the beginning. Or figure out
a different method for rotation that isn't literally a circle with some finite
elements around it. (Just cycle in the applications that are going to be
displayed at that time?)
Homescreen experiment

Added extra functionality to the visual experiment, creating a new experiment called "homescreen". Adds zooming in and out of apps on top of swiping through the selections.