Add support for FTP folders using "special" characters

[anonymous]

Cyberduck fails to render FTP folder names using French accented characters, such as:

é, è, à, etc...

This makes browsing such Folders impossible.

When these are client folders which cannot be renamed, we then have to temporarily switch to another FTP client.

Note: I imagine this also occurs with other non-English special characters. Not sure whether this is FTP-specific, or occurs across the board.

[dkocher]

See common problems.