Re: Enhancements to the documentation CMS

[Alan M. Carroll]

Due to the "it's never enough" effect I have extend the use specified nav bar 
links syntax. If you add a link that has a name of "Top", "Back", or "Next" 
(the auto-generated names) and a URL of '*', then the '*' will be changed to 
the corresponding generated value. If the generated value doesn't exist (e.g., 
you used 'Back' in the first item) then the link item is silently discarded.