Add PolylineGlowMaterialProperty

This allows for DynamicScnee materials to make use of the PolylineGlow type.

Note, CZML does not support this material yet.
Merge remote-tracking branch 'origin/master' into polylineGlow

Conflicts:
	CHANGES.md
IE fullscreen iframe workaround for the timeline.
Make timeline highlight ranges more configurable.

The timeline is overdue for a rewrite, this is temporary.
Fix documentation for DataSourceCollection.

Fixes #1514
Added fromRadians function to Cartographic.
Requiring longitude and latitude and defaulting altitude.
Fix CHANGES.md
Fix doc.
Fix fromRadians.
Fix doc.
Merge pull request #1767 from fstoner/CartographicFromRadians

Adding Cartographic fromRadians function
Fix coding error defining a prototype function inside the constructor.
Merge pull request #1769 from AnalyticalGraphicsInc/fixInfoBoxCode

Fix coding error defining a prototype function inside the constructor.
Fix incorrect label position when billboards are reused.
Merge pull request #1770 from AnalyticalGraphicsInc/fixLabelBillboardReuse

Fix incorrect label position when billboards are reused.
Fix type information.
Merge pull request #1766 from AnalyticalGraphicsInc/fix1514

Fix documentation for DataSourceCollection.
Merge pull request #1763 from AnalyticalGraphicsInc/timeline

Timeline tweaks
Tweak CHANGES.md