Add option to refresh local or remote only to Refresh button

[dm]

Add a dropdown option to Refresh button on toolbar to 'Refresh local' and 'Refresh remote' only.
Steps:

1. Create a new file and save it in local location.

2. Return to FileZilla - file does not show in current local pane.

3. Click 'Refresh' button on toolbar to refresh view and see new file.

What happens:

1. If the remote server is disconnected, FileZilla must take time to re-connect and grab a directory listing of remote server as well as local directory.

Wish:

1. When I know I want to refresh local only, I can select to do this.

2. This works equally in the other direction. Sometimes I only want to refresh the remote view (eg when someone else has dropped a file on the remote server).

[Tim Kosse]

#4392