Show online device count in web page

Signed-off-by: Jianhui Zhao <jianhuizhao329@gmail.com>

assets/src/components/Home.vue

@@ -1,6 +1,11 @@
 <template>
 	<div id="home">
-		<Input v-model="filterString" icon="search" size="large" @on-change="handleSearch" :placeholder="$t('Please enter the filter key...')" style="width: 400px" />
+         <Row type="flex" align="bottom">
+            <Col span="6">
+                <Input v-model="filterString" icon="search" size="large" @on-change="handleSearch" :placeholder="$t('Please enter the filter key...')" style="width: 400px" />
+            </Col>
+            <Col span="3" offset="15" class="counter">{{ $t('Online Device: {count}', {count: devlists.length}) }}</Col>
+         </Row>
         <Table :loading="loading" :columns="devlistTitle" :data="filtered" style="margin-top: 10px; width: 100%" :no-data-text="$t('No devices connected')"></Table>
 	</div>
 </template>
@@ -81,4 +86,8 @@ export default {
 	#home {
 		padding:10px;
 	}
+    .counter {
+        color: #3399ff;
+        font-size: 16px;
+    }
 </style>

assets/src/rtty-i18n.js

@@ -30,7 +30,8 @@ const RttyI18n = {
 		'Login': '登录',
 		'username is required': '用户名为必填',
 		'Login Fail! username or password wrong.': '登录失败，用户名或密码错误',
-		'Connect failed': '连接失败'
+		'Connect failed': '连接失败',
+		'Online Device: {count}': '在线设备数：{count}',
 	}
 }