fix. Cors Fix and Audiobookshelf Setting Design Fix

backend/novasonic-server.js

@@ -24,7 +24,7 @@ const app = express();
 app.use((req, res, next) => {
   res.setHeader('Access-Control-Allow-Origin', '*');
   res.setHeader('Access-Control-Allow-Methods', 'GET,POST,OPTIONS');
-  res.setHeader('Access-Control-Allow-Headers', 'Content-Type,Authorization');
+  res.setHeader('Access-Control-Allow-Headers', 'Content-Type,Authorization,X-ABS-URL,X-ABS-Token');
   res.setHeader('Access-Control-Allow-Private-Network', 'true');
   if (req.method === 'OPTIONS') { res.sendStatus(204); return; }
   next();