Event Edit and Delete

[andrewtchan]

You will add edit and delete buttons to the AdminEventDetail modal component. The edit button will bring up an event editor modal that looks much like the AddEvent modal does, except that it is preloaded with the current Event data, and when you submit it updates that Event rather than creating a new one.

• [x] Create event edit modal
• [x] Add edit and delete buttons to AdminEventDetail modal
• [x] Add delete logic to the delete button
• [x] Add confirmation logic to delete button