Fix render logic for RelatedChangesTab.NavigationList

+ Re-render the NavigationList whenever the visible rows change.
  This fixes a bug where calling setMaxHeight() after the NavigationList
  has been rendered, does not actually add rows to fill the new visible
  range. Also, guard against executing the render logic until the
  rowHeight has been measured.

+ Correctly remember the selected row across iterations of
  DisplayCommand.

Change-Id: Ifb17f1c2199eac67e166b862833ce7221fea6732
1 file changed