add delete project button

[xmedr]

Overview

This adds the ability to delete a project with a button towards the bottom of the attributes section of a project's detail page

Closes #218

Demo

Notes

I have the button towards the bottom so it's out of the way of normal use but still reachable. If there's another spot that would make more sense, please lmk!

Testing Instructions

• Create a dummy project to be deleted
• Go to that project's detail page, click the delete button, and confirm on the following page
• Confirm that:
  • you are redirected to the project listing page,
  • the project is no longer listed, and
  • there is an appropriate success message at the top