[Merge] ~enr0n/ubuntu-release-upgrader:ubuntu/main into ubuntu-release-upgrader:ubuntu/main

[Gunnar Hjalmarsson]

Hi Nick,

I have only had a brief look at it so far, but can't help wondering:

When I struggled with the other MP, I found that setting DBUS_SESSION_BUS_ADDRESS and using subprocess instead of Gio.Settings were needed to make it work. Can you tell what the 'secret' is, or was i simply mistaken as regards those details?
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https://code.launchpad.net/~enr0n/ubuntu-release-upgrader/+git/ubuntu-release-upgrader/+merge/452304
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