Add timefix and vacation routes to backend; update frontend for new routes and page titles

backend/src/routes/vacation.js

@@ -0,0 +1,18 @@
+const express = require('express');
+const router = express.Router();
+const VacationController = require('../controllers/VacationController');
+const unhashRequestIds = require('../middleware/unhashRequest');
+
+// Hinweis: Authentifizierung wird bereits in index.js durch authenticateToken Middleware gehandhabt
+
+// GET /api/vacation - Liste aller Urlaubseinträge
+router.get('/', VacationController.getAllVacations);
+
+// POST /api/vacation - Neuen Urlaubseintrag erstellen
+router.post('/', VacationController.createVacation);
+
+// DELETE /api/vacation/:id - Urlaubseintrag löschen
+router.delete('/:id', unhashRequestIds, VacationController.deleteVacation);
+
+module.exports = router;
+