Fix App.jsx two-page workflow JSX render and update study app layout

node_modules/jszip/lib/readable-stream-browser.js

@@ -0,0 +1,10 @@
+"use strict";
+/*
+ * This file is used by module bundlers (browserify/webpack/etc) when
+ * including a stream implementation. We use "readable-stream" to get a
+ * consistent behavior between nodejs versions but bundlers often have a shim
+ * for "stream". Using this shim greatly improve the compatibility and greatly
+ * reduce the final size of the bundle (only one stream implementation, not
+ * two).
+ */
+module.exports = require("stream");