Add next scan ETA display and update app state with scan timing information

front/php/templates/language/zh_cn.json

@@ -203,6 +203,11 @@
     "Device_MultiEdit_MassActions": "谨慎操作:",
     "Device_MultiEdit_No_Devices": "未选择设备。",
     "Device_MultiEdit_Tooltip": "小心。 单击此按钮会将左侧的值应用到上面选择的所有设备。",
+    "Device_NextScan_Imminent": "",
+    "Device_NextScan_In": "",
+    "Device_NoData_Help": "",
+    "Device_NoData_Scanning": "",
+    "Device_NoData_Title": "",
     "Device_Save_Failed": "保存设备失败",
     "Device_Save_Unauthorized": "未授权 - API 令牌无效",
     "Device_Saved_Success": "设备保存成功",
@@ -336,6 +341,7 @@
     "Gen_Invalid_Value": "输入了无效的值",
     "Gen_LockedDB": "错误 - DB 可能被锁定 - 检查 F12 开发工具 -> 控制台或稍后重试。",
     "Gen_NetworkMask": "网络掩码",
+    "Gen_New": "",
     "Gen_Offline": "离线",
     "Gen_Okay": "Ok",
     "Gen_Online": "在线",