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Changes between Initial Version and Version 1 of Ticket #254, comment 3

initial	v1
6	6
7	7	2) Delete the {task_id} directory that is being created for each submission and never cleaned up (hence this bug report). It explicitely deletes the uploaded file and the containing directory if its empty and will fail to recursively delete anything else (e.g. if by bad lack we happen to store our queued files in "/")
8
9		While fixing this in each backend, I noticed that we fail to entry.save() for images and stl, so I am not sure that our changes will be saved to the backend in all cases. In the case of images, this meant that we kept the "queued_media_file" entry despite us setting it to empty during processing.