新增page2页面按钮

web-ui.service/web/pages/page2.html

@@ -77,6 +77,8 @@
               </select>
               <button class="btn" title="点击设置日志级别" onclick="setLogLevel()">📝</button>
               <span style="margin:0 1px;"></span>
+              <button class="btn" title="点击下载日志文件" onclick="downloadLogFile()">⬇️📄</button>
+              <span style="margin:0 1px;"></span>
               <button class="btn" title="点击重启联网服务" onclick="restartNSvc()">🔄🌐</button>
             </div>
           </div>