refactor: 优化登录页按需加载

frontend/src/login/Login.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="container" v-loading="result.loading" v-if="ready">
+  <div class="container" v-if="ready">
     <el-row type="flex">
       <el-col :span="12">
 

frontend/src/login/login.js

@@ -1,5 +1,5 @@
 import Vue from 'vue';
-import ElementUI, {Button, Col, Form, FormItem, Input, Row} from 'element-ui';
+import {Button, Col, Form, FormItem, Input, Row, RadioGroup} from 'element-ui';
 import 'element-ui/lib/theme-chalk/index.css';
 import Login from "./Login.vue";
 import Ajax from "../common/js/ajax";
@@ -11,16 +11,13 @@ import logoHeader from "../assets/logo-light-MeterSphere.svg";
 
 Vue.config.productionTip = false;
 
-Vue.use(ElementUI, {
-  i18n: (key, value) => i18n.t(key, value)
-});
-
 Vue.use(Row);
 Vue.use(Col);
 Vue.use(Form);
 Vue.use(FormItem);
 Vue.use(Input);
 Vue.use(Button);
+Vue.use(RadioGroup);
 Vue.use(Ajax);