make the Login Window (stored session area) resizeable

if you have a lot of sessions and maybe want to drag and drop on session from the lowerst folder to the first folder it is rather unhandy that you are not able to resize the login window.
would be cool if you enable resizing for this window.

Thanks for your post. This request is tracked here:
https://winscp.net/tracker/378

thank you very much.

love to see the feature is comming in 5.x