Better sync manager error handling
optional progress callback added to execute
attach workflowId to TripResult model's attributes
Pass validObservationView to schoolListView in TutorMenuView
filter school visit counter according to validity, completeness, current user, and workflow
filter according to validity
eliminate unnecessary callback, trigger valid trips event
Merge branch 'tutor' of github.com:Tangerine-Community/Tangerine into tutor