perf: optimize some small details

src/layout/components/Navbar.vue

@@ -36,6 +36,9 @@
               {{ $t('navbar.github') }}
             </el-dropdown-item>
           </a>
+          <a target="_blank" href="https://panjiachen.github.io/vue-element-admin-site/#/">
+            <el-dropdown-item>Docs</el-dropdown-item>
+          </a>
           <el-dropdown-item divided>
             <span style="display:block;" @click="logout">{{ $t('navbar.logOut') }}</span>
           </el-dropdown-item>
@@ -68,7 +71,6 @@ export default {
   computed: {
     ...mapGetters([
       'sidebar',
-      'name',
       'avatar',
       'device'
     ])