Support for soft delete #272
Description
When a deployment or project is deleted, a lot of related data will also be deleted, including images and detections and analysis which may all have taken considerable resources to process. I recommend we implement a soft deletion method that retains data in the database and on the file system, but makes them unavailable to end users. Perhaps queue it for hard deletion in 1 month and allow user to recover data before that time.
And, or if we implement a good batch export & import process. That could be used to recover data.