expose date of deck's deploy+discussion

thinking we may want to do this by cluster, not by wagn.

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I think this may be less dire now that there will usually be only two deployments, pinz and ang.

  --Ethan McCutchen.....Thu Apr 30 11:07:45 -0700 2009

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It would help me when you push out a between-releases release (e.g. right now we're not really running 1.5+2)

  --John Abbe.....Mon Feb 21 22:30:50 -0800 2011