The info team should not have to push new commits to update the weekmail.
Weekmail class should get new parameters:
- A banner URL: to put a link to some public file, so that the com team could change it easily
- A footer URL: same as the banner
- A banner link: the com team could put its own link easily
This allow, moreover, to have different banner/footer for each weekmail. Thus, we could make a public, static page, displaying the current weekmail, and some archive page, showing the older ones, as in the old AE site.