put the D back in CRUD for FileField
|Reported by:||jvoorhis||Owned by:||Adrian Holovaty|
|Has patch:||no||Needs documentation:||no|
|Needs tests:||no||Patch needs improvement:||no|
Allow FileFields to delete their files in the dynamic admin, as well as add and overwrite them. This would be extremely useful for nested admin setups where a file upload is optional - for example an editable tracklist with optional mp3 for an album view.