cubicweb #171328 nicer ReST directives [open]

We currently have

:eid:`numero d'eid:libellé`

It would be nice to have some additional behaviour according to entity's type, for instance

  • specific style for closed tickets (barrĂ©s)
  • thumbnail for image
  • ...

Also maybe we could have a new directive to ease image inclusion, such as

.. image::
  :target: :eid:`1426`
  :height: 100
  :width: 200
  :scale: 50
  :alt: alternate text
  :align: right
prioritynormal
typeenhancement
done in<not specified>
load1.000
load left1.000
closed by<not specified>