## 全局新增接口
GET api/user/notifications

returns
```json
{
  "unread": 0
}
```


## carousel 
GET api/carousel
noauth

returns
```json
"interval": 3,
"items": [{
  "text": "<span style=\"color:2343;\"></span>",
  "uri": "page/boards",
}]      // 跑马灯
```