cubicweb-vcreview #1560565 display info about the patch in the patch view [waiting feedback]

e.g on https://www.cubicweb.org/patch/1553044 I would like to see the patch metadata displayed at the top of https://www.cubicweb.org/versioncontent/1560558

prioritynormal
typeenhancement
done in<not specified>
load0.100
load left0.100
closed by<not specified>