Add function to sync tree tab and now reading thread.
Add function to sync tree tab and now reading thread.

Hiroyuki-Nagata/JaneClone,Hiroyuki-Nagata/JaneClone,Hiroyuki-Nagata/JaneClone,Hiroyuki-Nagata/JaneClone,Hiroyuki-Nagata/JaneClone,Hiroyuki-Nagata/JaneClone,Hiroyuki-Nagata/JaneClone