Release 2.8.0

src/web/middleware/not-found.js

@@ -0,0 +1,9 @@
+// Forward unmatched requests to the shared error-page handler.
+
+module.exports = function registerNotFoundHandler(app) {
+  app.use(function (_req, _res, next) {
+    const error = new Error('Page not found.');
+    error.statusCode = 404;
+    next(error);
+  });
+};