AlternateFullScreen.cpp: remove unused variables
InfoBoxes/Panel/Base: add Move() so IBs will resize when screen changes
InfoBoxDescription.cpp/hpp: add Move()

This allows the panel to resize when layout changes.
InfoBoxes/../AlternateFullScreen.cpp: add Move() so resizes automatically
InfoBoxes/Panel/ATCReference.cpp: support Move()
InfoBoxes/Panel/GrAverage.cpp: support Move()
AltitudeInfo.cpp, Altitude.Setup.cpp: remove unused files
AltitudeSimulator.cpp/hpp: remove unused files.
InfoBoxes/Panel/Base: refactor: remove Prepare from non-widget classes

Change Prepare() to CalculateLayout()
for non-widget base classes
InfoBoxes/../AltitudeSimulatorFullScreen.cpp: add Move()
InfoBoxes/../MacCreadyEdit.cpp: add Move() so it resizes automatically
InfoBoxes/../OnlineContest.cpp: add Move() so it resizes automatically
TaskNavSliderWidget.hpp: make 2 methods protected instead of public

TaskIsCurrent() and ReadWaypointIndex() don't need to be public
TaskNavSliderWidget.cpp: set/sync waypoint_index in ReadWaypointIndex

This prevents occasional double-shifting of navbar when task manager
active point advances.  (Caused when ReadWaypointIndex is called again
rapidly before OnCursorMove() syncs waypoint_index.
TaskNavSliderWidget.hpp: add comments
AirspaceWarningConfig.cpp: display & warn class F by default

This caused a problem in Finland during the Worlds when it
did not show a prohibited airspace by default.
NEWS.txt
dlgStartupAssistant.cpp: add "how to exit" tip
MapWindow/Items/List.cpp: show Task Target items at top of list
MapWindow/Items/Builder.cpp: don't show Task Targets behind current

Only show the Task Targets in the Map item click list
if the target is ahead of the current location of the ship
in the task