add migrate page, need to make it redirect still

webpack.config.dev.js

@@ -42,6 +42,11 @@ module.exports = {
       date: buildDate,
       gapiKey: process.env.CORIOLIS_GAPI_KEY || ''
     }),
+    new HtmlWebpackPlugin({
+      inject: false,
+      template: path.join(__dirname, 'src/migrate.html'),
+      filename: 'migrate.html'
+    }),
     new ExtractTextPlugin({
       filename: 'app.css',
       disable: false,