#217 fixed checkboxes.

The checkboxes appeared to be working correctly but it wouldn't change the state of its corresponding state variable after the first click on the box, so I created handlers that adjusted which boolean was set to the state variable depending if that variable was already false or not.
Considering the input's value is 'crisis', aren't we setting the state property to a string here, instead of a boolean? Same for all the other checkbox handlers.