wayback: event name cleanup
wayback: move control view logic out of NavBarDropdown
wayback: switch to EventBus for events, part 1
wayback: switch to EventBus for events, part 2
wayback: switch to EventBus for events, part 3
wayback: switch to EventBus for events, part 4
wayback: switch to EventBus for events, part 5
wayback: now start with all range controls off
wayback: switch to EventBus for events, part 6