[sylpheed:31059] refresh subfolder list

[Popolon]

In sylpheed-2.4.0b5, when using a shared (on several computers) imap 
account. If a subfolder is created by another computer, it looks than 
there is no mean to refresh the subfolder list and the subfolder can't 
be easily made available. The only solution is to delete and create 
again account. Could the change be autodetected when closing/reopening 
folder containing this subfolder or at least by using contextual menu 
right mouse button=>update summary ?

Regards.

Olivier