Use a virtualized list for select components

[alexjball]

There are ~1500 elements in the occupation select. There is noticeable lag using react-select. Consider using react-select-virtualized instead which should render the list more efficiently and still allow for search/autocomplete.

[jedpittman]

per @alexjball , this is somewhat dead-ended currently, but this component will need revamping once we do the smart search. Parking it for now.