* Add Telemetry to command bar buttons
* Count and report # of files/notebooks/directories in myNotebook to telemetry
* Add resource tree clicks to Telemetry
* Log to Telemetry: opened notebook cell counts by type, kernelspec name
* Fix unit test
* Move Telemetry processor call in notebook traceNotebookTelemetry action from reducer to epic. Use action to trace other info.
* Fix react duplicate key error
* Log notebook cell context menu actions
* Reformat and cleanup
* Move resource tree tracing code out of render(). Only call once when tree is updated
* Fix build issues
