Completely disable the symbolSummary instead of just partially.
If beforeAll/afterAll fails, display an error.
Add a stack property to DeveloperError and RuntimeError.

This makes those errors display properly when thrown by specs.
Fix errors when cleaning up the imageryLayer_reproject context cache object.
Fix destroy to release the shaderPrograms correctly.
Destroy the scene transitioner before destroying the scene.
Merge pull request #876 from AnalyticalGraphicsInc/displayBeforeAllAfterAllErrors

Display errors thrown from beforeAll/afterAll