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

node_modules/resolve/test/precedence/aaa.js

@@ -0,0 +1 @@
+module.exports = 'wtf';

node_modules/resolve/test/precedence/aaa/index.js

@@ -0,0 +1 @@
+module.exports = 'okok';

node_modules/resolve/test/precedence/aaa/main.js

@@ -0,0 +1 @@
+console.log(require('./'));

node_modules/resolve/test/precedence/bbb.js

@@ -0,0 +1 @@
+module.exports = '>_<';

node_modules/resolve/test/precedence/bbb/main.js

@@ -0,0 +1 @@
+console.log(require('./')); // should throw