message: docs: move angularjs and add performance to nav
  PR Close
diff: "url": "guide/universal",
  "title": "Server-side Rendering",
  "tooltip": "Render HTML server-side with Angular Universal."
  + },
  + {
  + "title": "Upgrading from AngularJS",
  + "tooltip": "Incrementally upgrade an AngularJS application to Angular.",
  + "children": [
  + {
  + "url": "guide/upgrade",
  + "title": "Upgrading Instructions",
  + "tooltip": "Incrementally upgrade an AngularJS application to Angular."
  + },
  + {
  + "url": "guide/upgrade-performance",
  + "title": "Upgrading for Performance",
  + "tooltip": "Upgrade from AngularJS to Angular in a more flexible way."
  + },
  + {
  + "url": "guide/ajs-quick-reference",
  + "title": "AngularJS-Angular Concepts",
  + "tooltip": "Learn how AngularJS concepts and techniques map to Angular."
  + }
  + ]
  }
  ]
  },
  "url": "guide/updating",
  "title": "Keeping Up-to-Date",
  "tooltip": "Information about updating Angular applications and libraries to the latest version."
  - },
  - {
  - "title": "Upgrading from AngularJS",
  - "tooltip": "Incrementally upgrade an AngularJS application to Angular.",
  - "children": [
  - {
  - "url": "guide/upgrade",
  - "title": "Upgrading Instructions",
  - "tooltip": "Incrementally upgrade an AngularJS application to Angular."
  - },
  - {
  - "url": "guide/ajs-quick-reference",
  - "title": "AngularJS-Angular Concepts",
  - "tooltip": "Learn how AngularJS concepts and techniques map to Angular."
  - }
  - ]
  }
  ]
  },
  