add click handlers to buttons in complete review. (#1503)
add click handlers to buttons in complete review. (#1503)

* add export data handler

ref #1488

* add handler for add another dataset

ref #1488

* remove unused import.

ref #1488

* remove line

ref #1488

* remove plural s

ngageoint/hootenanny-ui,ngageoint/hootenanny-ui,ngageoint/hootenanny-ui