Merge pull request #829 from kairlec/wvp-28181-2.0

fix `Notification is not defined` on some device

web_src/src/layout/UiHeader.vue

@@ -40,6 +40,7 @@
 
 import changePasswordDialog from '../components/dialog/changePassword.vue'
 import userService from '../components/service/UserService'
+import {Notification} from 'element-ui';
 
 export default {
   name: "UiHeader",