ChoiceListView: Don't throw errors on up/down arrows with empty list.
ChoiceListView: Don't throw errors on up/down arrows with empty list.

osric-the-knight/foam,mdittmer/foam,osric-the-knight/foam,jlhughes/foam,mdittmer/foam,jacksonic/foam,foam-framework/foam,osric-the-knight/foam,mdittmer/foam,osric-the-knight/foam,jacksonic/foam,foam-framework/foam,jlhughes/foam,foam-framework/foam,jlhughes/foam,jlhughes/foam,mdittmer/foam,jacksonic/foam,jacksonic/foam,foam-framework/foam,foam-framework/foam