25.8.0-trunk.347.0712.094654

Pi-hole: link with Unbound by default, change default port, bugfixes

- change Unbound external port
- fix password set on Pi-hole
- ask for password after installation
- install and use Unbound with Pi-hole by default
- improve Pi-hole documentation
- purge of Unbound and Pi-hole were not removing folders
- set link to webadmin from armbian-config
- move default web port of Pi-hole from 80 to 8011