refactor(admin): move the advertising pages to Twig
The list, the form and the confirmation of /admin/ads become @admin/ads.twig,
@admin/ad-form.twig and @admin/ad-confirm.twig; the controller returns
ViewResponse and no longer depends on Render.
- the PHP closure that glued the reorder forms together is now a Twig macro
- the option lists of the radio groups moved to the controller, and the place
filters of the list are built from the same source
- the two hints carrying a <br> inside their msgid are printed with |raw
@admin/ad-form.twig and @admin/ad-confirm.twig; the controller returns
ViewResponse and no longer depends on Render.
- the PHP closure that glued the reorder forms together is now a Twig macro
- the option lists of the radio groups moved to the controller, and the place
filters of the list are built from the same source
- the two hints carrying a <br> inside their msgid are printed with |raw