Fix some warnings:

"delete" is a keyword, remove trailing whitespace, add missing semicolon.
Fix warnings.

I missed some jsHint problems before pulling in #570.  This fixes them and also updates CHANGES.
Merge remote-tracking branch 'origin/master' into deleteCleanup

Conflicts:
	Source/DynamicScene/processCzml.js
Changes after review.
Merge pull request #582 from AnalyticalGraphicsInc/deleteCleanup

Fix warnings.
Merge branch 'master' into polylineMaterials

Conflicts:
	CHANGES.md