Invoke updateAxis after moveToVisible in displayRootTimeline.
Disable progressive loading when in authoring mode.
[Bug Fix] Wrong URL hash parsing during refresh.
Disable progressive loading in authoring mode.
Clip ToYear dates in DB.

-ToYear for some timelines is set to 9999 to indicate ongoing event but this confilcts with minspan calculations. Therefore we need to clip ToYear values before calculating minspan.
Implemented synchronization of viewport during merge animation.