Fix CesiumInspecter and related specs

There were non-overlapping changes in #1464 that broke #1332.  Since they went into master about the same time, each branch worked fine until they were both merged together. Github didn't notice because they were non-overlapping changes.
Merge pull request #1473 from AnalyticalGraphicsInc/fix-cesium-inspector

Fix CesiumInspecter and related specs