cleanup events; listen for controller events on the playerRig instead of directly on each controller so we don't have to add/remove listeners every time a controller changes.

Sometimes won't teleport you if you're trying to teleport far (e.g. very high elevation change), but at least won't teleport you into the air.

switch the super-hands on the controllers back to using action_grab/action_release and support that properly in cursor-controller.