[Merge] ~3v1n0/nux:preinst-conffiles-restore-bionic into ~unity-team/nux:ubuntu/bionic

[Marco Trevisan (Treviño)]

The proposal to merge ~3v1n0/nux:preinst-conffiles-restore-bionic into ~unity-team/nux:ubuntu/bionic has been updated.

Commit message changed to:

debian/nux-tools.preinst: restore backup config files

These might be moved by x11-common.

LP: #1768610

For more details, see:
https://code.launchpad.net/~3v1n0/nux/+git/nux/+merge/348193
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Your team Unity Team is requested to review the proposed merge of ~3v1n0/nux:preinst-conffiles-restore-bionic into ~unity-team/nux:ubuntu/bionic.