Enable more than one "Allow from"-rule in Directory/Location

This patch allows you to add more than one "Allow from"-rule in Directory/Location:
directories => [ { path      => '/', allow       => [ 'from 127.0.0.0/8', 'from 192.168.0.0/24', ], },]

It's preserve the old behavior if you want
directories => [ { path      => '/', allow       =>  'from 127.0.0.0/8' } ]