Polish cursor modes
merge cursor work
Fixed transparency issue.
Clean up.
hud home button visibility
Merge remote-tracking branch 'upstream/master'
update dom2three.js
Improving hides and inFOV cursor modes
updated HUD links
Merge remote-tracking branch 'upstream/master'
WIP switch between 2d, 3d and VR rendering modes
tweaked VR enabled browser detection
changed landing page arrangement
rendermode changes piped into content