Tax rates update

After ZIP-manager upgrade:
- Copy FLAT.txt file to C:.
- Rename to trates.tx
- Open FTP program
- Host 192.168.254.50
- login as root
- open sub-folder /ud/insco
- copy trates.txt to C:
- go back to C: and rename it to trates.bak
- rename trates.tx to trates.txt
- go back to FTP
- put trates.txt (replace existing file)
- exit FTP program
- on Prelude type /INSCO.CREATE.NEW.TAX.RATES