Add method to permanently delete (purge) sequence reads from the filesystem

[apetkau]

Describe your idea for a new feature

Currently in IRIDA there's a method to delete sequence reads (or delete samples from a project). But these don't actually remove the sequence read data from the filesystem. Instead, they hide the sequence read data from appearing in a project/unlink it from a sample.

It would be very useful in some cases to be able to permanently delete sequence reads from the filesystem. Perhaps as a separate operation named something like "Purge" (or "Permanently Delete").

Describe how you would access this feature?

This could possibly appear as a separate operation available to regular users. Or it could appear as an option available only to administrators (who could maybe have a separate view of all "Deleted/unlinked" data and the ability to permanently delete this data).

Additional information

None.