fix: Implement Udacity reviewer suggestions fix: Remove conferenceId, implement KeyProperty, add websafeKey to _copySessionToForm fix: Introduce more efficient lists, remove unneeded fetch, correct neglected comments
fix: Implement Udacity reviewer suggestions
fix: Remove conferenceId, implement KeyProperty, add websafeKey to _copySessionToForm
fix: Introduce more efficient lists, remove unneeded fetch, correct neglected comments

qgreg/conferencegqw,qgreg/conferencegqw,qgreg/conferencegqw