Remove no longer needed IE 11 workarounds

As of IE 11.0.12 (KB2977629), many of the workarounds we have in place for IE 11 are no longer needed.
Fix issues with ScreenSpaceCameraController.

* Remove use of FrameState, which lagged behind a frame, causing inconsistencies between the controller and the camera.
* FrameState was being passed to Globe.pick instead of Scene.
Fix tests.
Merge pull request #2125 from AnalyticalGraphicsInc/fixCameraController

Fix issues with ScreenSpaceCameraController.
Remove unused modules and variables.
Merge pull request #2126 from AnalyticalGraphicsInc/cleanup

Remove unused modules and variables.
better water visualization originally implemented in trackSanta
fixed typo in comment
tabs replaced with spaces
cleanup for #1698
cleanup
Tweak
Merge pull request #2128 from AnalyticalGraphicsInc/cartesianFromDegreesSpecs

Use Cartesian3.fromDegrees in Specs
Merge pull request #2123 from AnalyticalGraphicsInc/remove-ie-workarounds

Remove no longer needed IE 11 workarounds
Merge pull request #2127 from gbeatty/santa_updates

better water visualization originally implemented in trackSanta
Tweak shader
Merge remote-tracking branch 'origin/master' into default-entityView
Fix parameter name.