PRETORIA (Reuters) – Nelson Mandela, the 94-year-old former South African president and revered anti-apartheid leader, is to undergo more tests in hospital on Monday after having a good rest on his second night in the facility, the government said. A statement from the office of President Jacob Zuma, who visited the Nobel Peace laureate on Sunday, gave no details other than to say, “President Mandela had a good night’s rest” and was “in good hands”. It also thanked members of the public for their messages of support. …