etc: add adduser.conf
 * assign more groups for new users: dialout fax cdrom floppy tape audio dip video plugdev fuse scanner netdev lpadmin powerdev
 * set home dirs to have permissions 0750 (instead of 755)
etc: sudo: *** feedback for password input
etc: sudo: restrict sudo binary path (secure_path option)
etc: sudo: set sudo timeout to 3 minutes
etc: udev: Start and stop bluetooth service as rfkill switch status changes
etc: add updatedb.conf (include /media/ in locate index)
packages: add gir1.2-gnomekeyring-1.0 to liferea package list (store credentials in gnome-keyring)
etc: add font antialiasing/rendering options (smoother, cleaner fonts)
etc: cron: add daily check for flash plugin upgrades , fixes Debian bug #700092
etc: modprobe: power: force power saving on intel_hda soundcards
etc: modprobe: disable pcspkr module (prevents BEEEEEPS)