Comment 2 for bug 1207125

Yeah, that's pretty terrible. What if we just drop all of the `long` handling in service.py, and have shell.py always print '????-??-?? ??:??:??' for containers? Possibly with some --yes-really option to go back and do the actual HEADs.

Does anyone actually use or get value from the dates returned? It isn't even the Last-Modified for the container; it's the X-Timestamp (which is more like ctime than mtime). What if we just dropped the column entirely?