fix(panel): fixed panel help tooltip issue, #4079

tasks/default_task.js

@@ -9,7 +9,7 @@ module.exports = function(grunt) {
     'concat:cssFonts',
     'styleguide',
     'sasslint',
-    'postcss'
+    'postcss',
     ]
   );
 

tasks/options/cssmin.js

@@ -1,5 +1,8 @@
 module.exports = function(config) {
   return {
+    options: {
+      restructuring: false,
+    },
     build: {
       expand: true,
       cwd: '<%= genDir %>',