Move performance debugging tools to app.jsx

src/core/components/app.jsx

@@ -1,6 +1,16 @@
 import React from "react"
 import PropTypes from "prop-types"
 
+let Perf = null
+let ReactPerfTool = null
+if (process.env.NODE_ENV !== "production") {
+  Perf = require("react-addons-perf")
+  window.Perf = Perf
+
+  ReactPerfTool = require("react-perf-tool")
+  require("react-perf-tool/lib/styles.css")
+}
+
 export default class App extends React.Component {
 
   getLayout() {
@@ -14,7 +24,10 @@ export default class App extends React.Component {
     const Layout = this.getLayout()
 
     return (
-      <Layout/>
+      <div>
+        <Layout/>
+        <ReactPerfTool perf={Perf} />
+      </div>
     )
   }
 }