Revert "Rewrite code updating navigation.rb"
Revert "Rewrite code updating navigation.rb"

This reverts commit a62a51c29bdd356fd9d1f71967e61325943b50e1.

rsalevsky/crowbar,vwallfahrer/crowbar,MaximilianMeister/crowbar,dirkmueller/crowbar,crowbar/crowbar,aplanas/crowbar,vwallfahrer/crowbar,aplanas/crowbar,aspiers/crowbar,nkrinner/crowbar,rhafer/crowbar,tserong/crowbar,mmnelemane/crowbar,aspiers/crowbar,mmnelemane/crowbar,rsalevsky/crowbar,SUSE-Cloud/crowbar,nkrinner/crowbar,toabctl/crowbar,toabctl/crowbar,tserong/crowbar,rhafer/crowbar,rhafer/crowbar,SUSE-Cloud/crowbar,dirkmueller/crowbar,crowbar/crowbar,MaximilianMeister/crowbar