add redirect feature for authentication

interface/src/authentication/Authentication.js

@@ -21,7 +21,7 @@ export function fetchLoginRedirect() {
   const loginSearch = localStorage.getItem(LOGIN_SEARCH);
   clearLoginRedirect();
   return {
-    pathname: loginPathname || "/",
+    pathname: loginPathname || "/wifi-configuration",
     search: (loginPathname && loginSearch) || undefined
   };
 }

interface/src/authentication/UnauthenticatedRoute.js

@@ -0,0 +1,24 @@
+import * as React from 'react';
+import {
+  Redirect, Route
+} from "react-router-dom";
+
+import { withAuthenticationContext } from './Context.js';
+import * as Authentication from './Authentication';
+
+class UnauthenticatedRoute extends React.Component {
+  render() {
+    const { component:Component, ...rest } = this.props;
+    const renderComponent = (props) => {
+      if (this.props.authenticationContext.jwt) {
+        return (<Redirect to={Authentication.fetchLoginRedirect()} />);
+      }
+      return (<Component {...props} />);
+    }
+    return (
+      <Route {...rest} render={renderComponent} />
+    );
+  }
+}
+
+export default withAuthenticationContext(UnauthenticatedRoute);