LONDON (Reuters) - European travel company TUI said that it needed to cut its fixed cost base by 30% and thousands of jobs would be lost as it looks to right-size its business to survive in a market weakened by the coronavirus pandemic.The Germany-headquartered group warned on Wednesday that group turnover and earnings would decline significantly in its current financial year, with cost savings only partly compensating for the downturn caused by the novel coronavirus. As the virus spread rapidly..