LONDON (Reuters) - Multi-award winning singer Adele returned to number one in the albums chart with "21", overtaking David Bowie and Dire Straits for the number of weeks spent in the top spot, the UK's Official Albums Chart said on Sunday. The Brit and Grammy award winner moved up two places in her 64th week in the albums chart with "21". During her career, she has notched up 23 weeks at number one, including one week for her debut album "19" and 22 weeks for "21". Bowie and Dire Straits both managed 22 weeks. ...