[Merge] ~seb128/livecd-rootfs:canary-new-desktop into livecd-rootfs:ubuntu/master

[Łukasz Zemczak]

I'll test this alongside of the changes in https://code.launchpad.net/~ubuntu-cdimage/ubuntu-cdimage/canary-as-default , which I need to migrate to git. On it now.
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https://code.launchpad.net/~seb128/livecd-rootfs/+git/livecd-rootfs/+merge/433534
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