Update requirement files with new feature templates and fix backend API error message, along with mobile project config updates and documentation improvements

03_source/mobile.trunk/capacitor.config.json

@@ -0,0 +1,8 @@
+{
+  "appId": "io.ionic.starter",
+  "appName": "ionic-react-conference-app",
+  "bundledWebRuntime": false,
+  "npmClient": "npm",
+  "webDir": "dist",
+  "cordova": {}
+}