修改按键配置相关的代码

TC1/http_server/web/index.html

@@ -1034,6 +1034,9 @@ for (var i = 0; i < actions.length; i++) {
   }
 
 }
+if (actions.length == 0) {
+          tb_html += "<tr><td colspan='5'>没有自定义按键动作</td></tr>";
+        }
 document.getElementById("short_click_events_tb").innerHTML = tb_html;
 componentHandler.upgradeDom();