[Merge] lp:~seb128/software-properties/dialog-enable-proposed into lp:software-properties

[Sebastien Bacher]

> I didn't look too closely to see if this is possible, but I wonder if the confirmation dialog 
> should be different if the release is still in development. 

Yeah, we might not display that control in that case

> Ideally, enabling -proposed wouldn't be an option for the development release in the GUI so maybe 
> this is moot.

The warning is intended for stable series as far as I understand it, proposed SRUs are less likely to be an issue than devel-proposed but still cause confusion and problems for users, so I think the change is still relevant
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https://code.launchpad.net/~seb128/software-properties/dialog-enable-proposed/+merge/286213
Your team Ubuntu Core Development Team is requested to review the proposed merge of lp:~seb128/software-properties/dialog-enable-proposed into lp:software-properties.