Render the SignIn if token is expired

src/App.js

@@ -160,9 +160,11 @@ class App extends React.Component {
   }
 
   render() {
-    let component = <Panel onLogout={this.logout} />;
+    let component;
     if (!this.isLoged()) {
       component = <SignIn onLogin={this.login} />;
+    } else {
+      component = <Panel onLogout={this.logout} />;
     }
 
     return (