LONDON (Reuters) - French electronic duo Daft Punk notched up their first number one in Britain's official singles charts on Sunday, dislodging London drum'n'bass quartet Rudimental who were pushed into the number two spot. Daft Punk's song "Get Lucky", featuring the guest vocals of Pharrell Williams and Nile Rodgers on guitar, had entered the chart the previous week in the number three spot. It racked up sales of 155,000 in the past week, the Official Charts Company said, the biggest one-week sales tally of the year. ...