Redirect on splash page if not logged.

https://git.happy-dev.fr/startinblox/applications/coop-starter/coopstarter-front/issues/104

src/index.pug

@@ -51,7 +51,9 @@ script(type='module').
           let idToken = await sibAuth.getUserIdToken();
 
           if ( !user ) {
-            return;
+            window.dispatchEvent(
+              new CustomEvent('requestNavigation', { detail: { route: 'splash' } })
+            );
           }
           user = await store.get(user);