add empty config/navigation.rb
add empty config/navigation.rb

rs-pro/rocket_cms,xronos-i-am/rocket_cms,ack43/rocket_cms,rs-pro/rocket_cms,xronos-i-am/rocket_cms,rs-pro/rocket_cms,ack43/rocket_cms,xronos-i-am/rocket_cms,xronos-i-am/rocket_cms,ack43/rocket_cms,rs-pro/rocket_cms,ack43/rocket_cms