3d-glasses technology added

Squashed commits:
smaller difference in left-eye right-eye images (+6 squashed commits)
[df67ae1] can’t use extend() on production (until we upgrade LESS)
[45dde08] Removed console.log
[b7a9279] Used 0-255 range numbers for rgba colors instead of percentages
[555cc6e] made a 3d mode toggle button. cleaned up style placement
[80a30e7] 3d effect on/off buttons
[f6deed3] started 3d glasses style