preparing svelte login, mastered translations

frontend/src/Components/Menu.svelte

@@ -1,3 +1,13 @@
+<script>
+    import { t } from '../translations.svelte.js';
+    import { user } from '../user.svelte.js';
+
+    function logout(){
+        user.username = null;
+    }
+</script>
 <nav>
-    <a href="/">Home</a>
+    <a href="/">{t('nav.Home')}</a>
+    <a href="https://svelte.dev/tutorial/svelte/state" target="_blank">{t('nav.Tutorial')}</a>
+    <a href="#" on:click={logout}>Logout</a>
 </nav>