Make publication metadata simpler, clearer and less flappy.

Standardise metadata in publications as described in [this story](https://www.agileplannerapp.com/boards/105200/cards/5534)

Make the history flap less, get rid of the black dialogue box.
Show published and last updated at date/times.
Link to full document history in page footer. 
@camilleldn good point, this one was not generated, I'll fix that.