systemd session: only react to lid close, not to other events

lid close should hybrid sleep
i3 session mixin: lock screen before sleeping
bluebook/hardware: provide on-battery.target

(de)activated by ACPI AC events
retried after sleep
bluebook/hardware: powersaving jobs bound to new structure
add all debian+ubuntu firmware
 - enables bluetooth
 - intel mgmt interface
 - patch for wired ethernet adapter
let's try calibre
let's do some freedom-fighting :)
ssh host key syntax changed