Remove Articles and Tutorials page from Extensions pages
Fix links to Discussions post
Add a rule to the ninja.xsl file for relative URLs

Apply the value of $root parameter to any anchor href beginning with a '/'
Modify XML to set the href attributes to be root relative URLs
Render HTML files to fix href values for Discussions pages
Add XML from the Factory examples for Extensions, Ninjas and xpathr
Render HTML for Extensions, Ninjas and xpathr