Doc server manifest page generation

chrome/common/extensions/docs/templates/json/extensions_sidenav.json

 [
   {
     "title": "Getting Started",
     "fileName": "getstarted.html"
   },
   {
     "title": "Overview",
     "fileName": "overview.html"
   },
   {
@@ skipping 188 matching lines @@
     ]
   },
   {
     "title": "More",
     "items": [
       {
         "title": "FAQ",
         "fileName": "faq.html"
       },
       {
+        "absolute_url": true,
         "title": "Chrome Web Store",
         "fileName": "http://code.google.com/chrome/webstore/docs/index.html"
       },
       {
+        "absolute_url": true,
         "title": "Hosted Apps",
         "fileName": "http://code.google.com/chrome/apps/docs/developers_guide.html"
       },
       {
         "title": "Themes",
         "fileName": "themes.html"
       }
     ]
   }
 ]