Progress and indication of success/temporary storage is working.

I used the report on Friday... and while filling it out I had a bit of a nervous feeling that perhaps, my previous steps were not being saved/stored correctly.  I wonder if there is some kind of indicator/success (turn tabs green) that could re-assure the user that the values they have set are there.

If I would have closed my laptop lid, would I have lost the changes?
Should we consider holding something in local storage?

- [x] save data to localStorage.
- [ ] prompt user if they would like to load data from local storage.