reverse order Euler Angles applied to parent screen align all slides properly
enhanced readbility.  homogenized variable and function naming conventions '_' for private
added tweening between 3d frames
focal length offset has become 1.25 to fit frame.  still need to understand what's affecting that.
removed focal length scaling.  problem was related to chrome browser zoom
smoothed our transitions

Merge branch 'develop' into feature/spline_transition

* develop:
  removed focal length scaling.  problem was related to chrome browser zoom

Conflicts:
	js/scene.js
established smooth resizing, and reduced codebase