Merge pull request #402 from mozilla/cleanup-input-handling

src/components/cursor-controller.js

src/components/input-configurator.js

src/components/look-on-mobile.js

src/components/pitch-yaw-rotator.js

src/components/super-spawner.js

src/hub.html

src/hub.js

src/input-mappings.js

src/utils/action-event-handler.js

src/utils/gearvr-mouse-events-handler.js

src/utils/mouse-events-handler.js

src/utils/touch-events-handler.js