now redraws selected area after dropping selection in editor
we're not actually using ^G for "find next" right now, and might want ctrl-` for a switch action
split Input dialogs up into more specialized subclasses
moved the up & down arrow management to the picker dialog from the base input dialog
moved digit-key-select action to the pick dialog from the base input dialog
picker initializes picker-specific input vars (which will move down to Pick)
moved suggestion list paint code into Pick subclass of Dialog::Input
picker shouldn't tell the superclass to draw itself active unless a picker item is not currently selected
moved left-arrow and right-arrow escape behaviors to Pick subclass of Input
poll is back to being a root-level window/view method