Merge branch 'release/5.3' into gray

@@ -192,6 +192,9 @@ gulp.task('webpack', (done) => {
     proConfig.plugins.push(new webpack.optimize.UglifyJsPlugin({
         compress: {
             warnings: false
+        },
+        output: {
+            keep_quoted_props: true
         }
     }));
     webpack(proConfig, (err, stats) => {