With reference to his reply to question 1966 on 6 October 2016, what was the (a) total number of section 33(3) court convictions obtained for cases opened against the South African Police Service members for being in contravention of section 29(2) of the Independent Police Investigative Directorate Act, Act 1 of 2011, as amended, since the specified Act came into effect and (b) sentences handed down in each of the specified cases?