opt:修改国际化，add:增加大屏看板

nladmin-ui/src/layout/components/Navbar.vue

@@ -50,10 +50,11 @@
         <span class="el-dropdown-link" style="font-size: 18px">
           {{ language }} <i class="el-icon-caret-bottom" />
         </span>
+        <!-- 国际化开发：1.修改语言列表-->
         <el-dropdown-menu slot="dropdown">
           <el-dropdown-item divided command="zh">简体中文</el-dropdown-item>
           <el-dropdown-item divided command="en">English</el-dropdown-item>
-          <el-dropdown-item divided command="in">Indonesian</el-dropdown-item>
+          <el-dropdown-item divided command="iv">Vietnamese</el-dropdown-item>
         </el-dropdown-menu>
       </el-dropdown>
     </div>
@@ -137,13 +138,14 @@ export default {
       this.setLang(command)
       location.reload()
     },
+    // 国际化开发：2.设置
     setLang(command) {
       if (command === 'en') {
         this.language = 'English'
       } else if (command === 'zh') {
         this.language = '简体中文'
-      } else if (command === 'in') {
-        this.language = 'Indonesian'
+      } else if (command === 'iv') {
+        this.language = 'Vietnamese'
       }
     },
     toggleSideBar() {