EPD-190: Fixed NPE in RpntErrorGraphic
EPD-190: move vessel name setting to VesselLayerSettings (from AisLayerCommonSettings)
EPD-190: fixed issue where an AIS target would always show its name label when it was added to layer - even though settings specified not to
EPD-190: fixed class cast exception by introducing a proper SpinnerNumberModel for intended route broadcast time.
EPD-190: Added source argument to LayerSettings.IObserver.isVisibleChanged() to allow implementations to check what type of settings fired the event.