Clear tracked object when data sources are removed.
Merge branch 'master' into let-go
Use new events to detect when a trackedObject has been removed and fly to home view when it happens.
Merge branch 'master' into let-go
Merge branch 'master' into let-go
Fix formatting.
Add specs for tracked object clearing.
Fixes to new unit tests.
Merge pull request #1117 from AnalyticalGraphicsInc/let-go

Clear tracked object when data sources are removed.