Do not show DeviceID in lists.

DeviceID is internal OpenLMI ID to identify block devices. It's quite long
and most admins will use '/dev/sda' (or just 'sda') anyway, so let's remove
it from all 'list' commands output.

'show' command will show it, if anybody is interested.
Merge pull request #47 from jsafrane/devel/list-no-deviceid

Do not show DeviceID in lists.