DriveSetup: Added disk name to the DiskView.

* The disk device name will be shown on the disk map.

Signed-off-by: Axel Dörfler <axeld@pinc-software.de>
DriveSetup: fixed device row size/name.

* Apparently, the order the fields are set matters, so the drive name
  and the size now appear in the list as they should have before.
* Leave the size field empty if the size is 0.