Create two new categories for the sidebar

docusaurus/website/sidebars.json

@@ -15,9 +15,9 @@
       "lint-output-in-the-editor", 
       "debugging-in-the-editor",
       "formatting-code-automatically",
-      "proxying-api-requests-in-development",
       "developing-components-in-isolation",
-      "analyzing-the-bundle-size"
+      "analyzing-the-bundle-size",
+      "using-https-in-development"
     ],
     "Styles and Assets": [
       "adding-a-stylesheet",
@@ -28,8 +28,7 @@
       "using-the-public-folder",
       "code-splitting"
     ],
-    "How-to": [
-      "changing-the-page-title",
+    "Building your App": [
       "installing-a-dependency",
       "importing-a-component",
       "using-global-variables",
@@ -38,19 +37,24 @@
       "adding-relay",
       "adding-a-router",
       "adding-custom-environment-variables",
-      "can-i-use-decorators",
+      "making-a-progressive-web-app"
+    ],
+    "Back-End Integration": [
+      "proxying-api-requests-in-development",
       "fetching-data-with-ajax-requests",
       "integrating-with-an-api-backend",
-      "using-https-in-development",
+      "changing-the-page-title",
       "generating-dynamic-meta-tags-on-the-server",
-      "pre-rendering-into-static-html-files",
-      "injecting-data-from-the-server-into-the-page",
-      "making-a-progressive-web-app",
-      "advanced-configuration",
-      "alternatives-to-ejecting"
+      "injecting-data-from-the-server-into-the-page"
     ],
     "Testing": ["running-tests", "debugging-tests"],
     "Deployment": ["publishing-components-to-npm", "deployment"],
+    "Advanced Usage": [
+      "can-i-use-decorators",
+      "pre-rendering-into-static-html-files",
+      "advanced-configuration",
+      "alternatives-to-ejecting"
+    ],
     "Support": [
       "troubleshooting", 
       "updating-to-new-releases",