Introduce a way to toggle "magic-window" on/off on mobile devices

[PlumCantaloupe]

Larger tablets can be tiring to hold up, but using the device to look around can be fun and practical. A possible solution might be to introduce a basic button that lets you switch between magic-window mode and non-magic-window mode (can only scroll left/right on iPad i.e., same as mode when we do not allow access to sensors).

We may even want to consider eating a new look-controls that allows users to scroll around left/right and up/down.