Review and migrate 'To be migrated' book

As we were going through the book pages and migrating them into the new system, sometimes it wasn’t clear where in the new system to migrate the page to. Perhaps the proper location didn’t exist at that time or still needs to be created. Those pages where we were unsure are collected at https://www.drupal.org/to-be-migrated.

Todos:


Source: https://www.drupal.org/project/issues/rss/documentation