Integration test for removing an ImageUploader image
Integration test for removing an ImageUploader image

Test removing a person image removes all versions from Asset Manager
and the file system.

This test could probably be more comprehensive by stubbing a realistic
return value from `whitehall_asset` and asserting that `delete_asset`
is called with all of the correct IDs but I'm reasonably confident
that this test would fail if we stopped deleting versions altogether.

alphagov/whitehall,alphagov/whitehall,alphagov/whitehall,alphagov/whitehall