Optionally preserve /home when installing

[probonopd]

Optionally preserve (= do not touch) /home when it is already existing on a suitable ZFS partitioning scheme. This would allow for re-installing the OS while keeping user data.

• Disk partitioning and formatting would need to be skipped.
• The existing ZFS datasets would need to be re-used.
• User creation would need to be handled somehow, e.g., by preserving all users with UID >= 1000 from the told to the new system and skipping the user creation dialog.

[kettle-7]

Something I've thought would be a great improvement for many Linux installers (and helloSystem) would be if there was an option in the installer to copy your home files on the Live CD over to the new system (so that, for example, if you bookmarked some pages in Falkon and worked on some documents in LibreOffice they would be there when you used the new system).