Controllers not working with Firefox

[caseyyee]

This can be fixed by using the latest controls in three.

The controllers are checked once when the displays are queried and if controllers are not available, they won't be active in the experience. The newest three.js controls poll for controllers on update, so updating the controller libs will fix this.

[cvan]

@caseyyee if you get a chance, do you have any spare cycles to get the controllers fixed?