Update standards version to 3.9.6, no changes needed
Remove restart command for firewall (not initscript)
Add status command to lernstick-firewall
Separate start/stop from whitelist

Starting and stopping the firewall is now completely independant of the
whitelist handling. On boot the firewall is only started without the
whitelist. The whitelist is only (re)loaded on interface status changes.
The firewall itself (beside the whitelist) is not changed on these
events.
Suppress output if VERBOSE=no
Update README