Umind module develop (#3029)

* complete loading step

* update code struct

* add minimap

* add save btn

* add save handler

* get the data after modify

* optimized umind style

* add save method

* optimized code

* delete console

* update dependencies

* update conf

* delete unnecessary code

* delete umind create button

frontend/config/webpack.config.dev.js

@@ -128,6 +128,11 @@ module.exports = {
       require.resolve('./polyfills'),
       require.resolve('react-dev-utils/webpackHotDevClient'),
       paths.appSrc + "/pages/org-admin",
+    ],
+    viewFileUMind: [
+      require.resolve('./polyfills'),
+      require.resolve('react-dev-utils/webpackHotDevClient'),
+      paths.appSrc + "/view-file-umind.js",
     ]
   },