BERLIN/MUNICH/FRANKFURT (Reuters) - German payments company Wirecard collapsed on Thursday after disclosing a massive financial hole in its books, leaving creditors owed nearly $4 billion (£3.2 billion) facing an almost complete wipeout.The implosion of the fintech company comes less than two years after it won admission to Germany's prestigious DAX stock index. Worth $28 billion at its peak, Wirecard becomes the first DAX company to go out of business.Shares in Wirecard plummeted 80% to their..