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

[Brian Murray]

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