add expire days to upload link

frontend/src/models/shared-upload-info.js

@@ -10,6 +10,8 @@ class SharedUploadInfo {
     this.ctime = object.ctime;
     this.token = object.token;
     this.view_cnt = object.view_cnt;
+    this.expire_date = object.expire_date;
+    this.is_expired = object.is_expired;
   }
 
 }