Remove ability to change 2D/CV projection at runtime.  Cleanup camera creation in tests
Rename scene2D.projection to mapProjection
Added MapProjection interface for documentation
Added options parameter to Scene constructor
Merge remote-tracking branch 'origin/master' into projection
Add mapProjection option to Viewer and CesiumWidget
Doc tweak
Merge remote-tracking branch 'origin/master' into projection
Merge master to projection
Merge master to projection
Fix ScreenSpaceCameraController tests and a doc fix.
Merge pull request #1775 from AnalyticalGraphicsInc/projection

Make map projection ready-only