workstation firewall: less debugging
- added /etc/default/grub
-- higher console resolution
-- enable "apparmor=1 security=apparmor" by default
   (but didn't enable enforce mode or added any useful profiles)
-- more verbose output while booting, since on slow machines it
   may look like there is no progress otherwise
- added apparmor-profiles, apparmor-utils to whonix-shared Recommends
- run update-grub while building Whonix and fix /boot/grub/grub.cfg due to a known bug in grub