Create a "maintenance mode" that disables donations
Context: tpo/tpa/team#41109 (closed)
By setting the GivingForm "maintenanceMode" prop to true
in
templates/donate-form.html, we can disable donations, disable the giving
form completely by not rendering it, and present users with a modal
letting them know about the maintenance.
This won't prevent automated donations, but that's out of scope.
Edited by Kez