Ajout d'une page 'Non autorisée' et redirection automatique vers celle ci en cas d'accès via un compte non autorisé

client/src/components/App.tsx

@@ -13,6 +13,7 @@ import { Modal } from './Modal';
 import { createClient } from '../util/apollo';
 import { ApolloProvider } from '@apollo/client';
 import { LogoutPage } from './LogoutPage';
+import { UnauthorizedPage } from './UnauthorizedPage/UnauthorizedPage';
 
 export interface AppProps {
 
@@ -41,6 +42,7 @@ export const App: FunctionComponent<AppProps> = () => {
         <BrowserRouter>
           <Switch>
             <Route path="/" exact component={HomePage} />
+            <Route path="/unauthorized" exact component={UnauthorizedPage} />
             <PrivateRoute path="/profile" exact component={ProfilePage} />
             <PrivateRoute path="/workgroups/:id" exact component={WorkgroupPage} />
             <PrivateRoute path="/decisions/:id" exact component={DecisionSupportFilePage} />