By Ange Kasongo KINSHASA (Reuters) -Democratic Republic of Congo President Felix Tshisekedi has been re-elected for a second term after getting more than 73% of the vote in a Dec. 20 poll, the country’s election commission CENI said on Sunday. The declaration of the result follows days of opposition complaints about the way the election was conducted. Logistical setbacks, an election day over-run, and an opaque vote count have fuelled a dispute that threatens to further destabilise a country roughly the size of Western Europe which is the world’s top producer of cobalt and other prized industr…