✔️ Stale Permission Clean-up

[jon-nfc]

Within Django if a permission is removed, it is not cleaned from the db. this includes from management command remove_stale_contenttypes

Details

Add a signal that runs on migration, that removes permissions that are no longer defined within the model.

Tasks

• create signal to run post_migrate

Requirements

• Does not touch django default perms add, change, delete and view