[Wishlist] Add support for FTP folders including username and password

FTP would be a new favorite type.

Two location formats:

Enter password in a dialog box:
ftp://username@ftp.domain.ext/public_ftp/incoming/

With password registered in the location (and in the ini file *in clear text* be cautious)
ftp://username:password@ftp.domain.ext/public_ftp/incoming/

FTP favorites could be added to groups (see this item).