- fix initialization of AutoUpgrade for 2nd stage
- 2.20.4

- adaptations for unattended migration (fate#310481)
- don't delete /etc/mtab if it is a symlink (bnc#665437)
- 2.20.3

- fixed progress during live installation (bnc#665413)
- 2.20.2

- update XFCE desktop definition

- Using wider space for licence displayed in non-textual interface
(BNC #607135).
- Fixed DUD deployment (BNC #626337)