Draft: correct the names of two layouts for Ladin, to obey "Language (Country)"

Actually, Ladin is spoken only in Italy, not in Germany. According to a picture on Wikipedia, Ladin is spoken in parts of South Tyrol and Veneto. In South Tyrol most people have German as their first language, so they probably use German/Austrian Qwertz keyboards, while in Veneto most people have Italian as their first language, so they probably use Italian Qwerty keyboards.

So a better designation for the two Ladin layouts would probably be: Ladin (QWERTZ) and Ladin (QWERTY). And both layouts should be defined in the symbols/it file.