2161e90cda
GenericDisplay wasn't quite completely converted to the ShellOverflowList model. Since the list now holds all actors, the indexing/wrapping was incorrect. Add a property which lets us keep track of how many items are displayed, use this in genericDisplay. Avoid setting selectedIndex to -2 when going up with no items. If we're not displaying any results at all, don't attempt keynav (for now).
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