全局引入element-ui的样式文件，不然toast弹窗等element组件有时会样式异常（但又不是必现的，坑爹。）

packages/qjkankan-editor/src/mixins/index.js

@@ -9,6 +9,7 @@ import clickwindow from "@/directives/v-clickwindow";
 import * as api from "../api";
 
 import { Message, InfiniteScroll } from 'element-ui'
+import 'element-ui/lib/theme-chalk/index.css';
 
 const MARERIAL = ["image", "pano", "scene", "audio", "video"];