Instance delete spinner #1748
Description
Instance delete can take a non-negligible amount of time (~5s) on Rack3. When clicking the "Confirm" button on the delete modal there should probably be some kind of loading spinner on the modal to confirm that the delete is occurring. Currently nothing happens and my immediate reaction was that the confirm button was not working.
This should probably be a general pattern, as presumably there are other resources that require non-zero time to delete.