Add a save button to the bottom of the edit modal

[dmnewcomb]

The user experience is pretty unclear regarding saving changes. We should clarify that with some type of save button experience.

This mockup design can be changed up. Maybe there's a background, or different font styling, or some color change on hover? The basic idea should hold though that by clicking this button on the bottom of the modal, the changes save. And by clicking X at the top right, the changes do not persist.

[dmnewcomb]

Icons are coming from https://feathericons.com/ so you could the save icon for the design.

[dmnewcomb]

Code mostly found in editModal.jsx and editModal.css. Design-wise, the save button should be persistent so if there's internal scrolling due to large number of editable fields, we want to make sure the user can always click save. Keep that button fixed to the screen.