renamed List Picker to PrefetchList Picker (ListPicker will be common for a TypeaheadList Picker)
renamed Typeahead Picker to TypeaheadList Picker
moved PrefetchListPicker.css out into ListPicker.css (will be shared with TypeaheadList Pickers)
added common List Picker styling to TypeaheadList Pickers
split common List Picker js directives out of TypeaheadList Picker
pulled out the generic list picker config from prefetch list config