Stimulus Reset

Wrote a script that resets the objects back to the center once they've
all been grabbed. Added a standard first-person controller to use when
working without the Oculus. Greyed out the Oculus controller and the
maze roof.

I see the iLogger message at the start reporting that there are 5
loggable objects, which was cool. Let's talk on Thursday about how best
to organize the stimuli to work with your logger, Kevin.