Made iptraffic logging more robust

Find columns from header.
Drop lines with target specified.
Setting root password at VPS creation time

HyperVM did not set the root password when creating an OpenVZ
VPS so I checked the code for that and found nothing.
Inserted
                // 20130722 OA - I cannot see it setting anywhere else at creation time
                $this->setRootPassword();
Fixed shortened number format in traffic monitoring

Because iptables shortens the numbers (kilo, mega etc),
php summed the vales wrong (simply cutting down the suffix).
	 iptables -x does not shorten.
And now in the good file, too...
Merge pull request #38 from semirke/dev

Several fixes