MUNICH, Dec 12 (Reuters) – Former Wirecard manager Markus Braun’s attorneys accused prosecutors of botching Germany’s major submit-war fraud demo at the begin of his defence on Monday and alleged that their vital witness was in reality the most important perpetrator. Braun, 53, and two other ex-Wirecard administrators Oliver Bellenhaus and Stephan von Erffa are on trial on charges which include market manipulation and fraud at the defunct payments business and could facial area up to 15 years in jail if convicted. Wirecard’s collapse two yrs in the past shook the German business enterprise establishment, putting politicians who had backed it and regulators who took many years to investigate allegations…