Add delete account function

[greendinosaur]

Issue

Context

Users should be able to delete their own accounts. Such a deletion deletes all personal data for the user and deactivates their log-in. Many users are worried about data protection issues and want to delete an account from a website they no longer use.

• OS
• Browser type and version

Expected Behavior

a delete button accessible to logged in users that when clicked:

• deletes all their data from the database
• deletes any cookies stored by the website
• deletes their account from Auth0

Current Behavior

This is a new feature