Client: Transfer|Manual transfer defaults

[Mirco]

In the filezilla windows client, it would be nice to implement the following:

1) If the focus lies on ONE LOCAL FILE, starting Transfer|Manual transfer could already default to UPLOAD and present the selected file in the local file textbox.

2) If the focus lies on ONE REMOTE FILE, starting Transfer|Manual transfer can default to DOWNLOAD and present the remote file in the EXTERNAL FILE textboxes.

Remarks:
Currently when starting Manual transfer the local textbox already contains the local path and the external file textbox already contains the external path. It would be nice if also the selected filename could be taken into account and also the transfer direction.