fixed missing endpoint GET /routes/:id/pois/:id and added json style fileupload

server.js

@@ -12,7 +12,10 @@ const db = openDatabase();
 const app = express();
 
 app.disable('x-powered-by');
-app.use(express.json({ limit: '2mb' }));
+app.use(express.json({
+  limit: config.maxJsonBodyBytes,
+  type: ['application/json', 'application/*+json', 'text/json']
+}));
 app.use(express.urlencoded({ extended: true, limit: '2mb' }));
 app.use('/api', createApiRouter(db));
 app.use(express.static(path.join(__dirname, 'public'), { extensions: ['html'] }));