What is the total amount in rand spent by the (a) senior management and (b) board members of the entities reporting to her (i) in (aa) 2014, (bb) 2015 and (cc) 2016 and (ii) since 1 May 2017 on hotels, including the (aa) name of the hotel(s), (bb) the duration of their stay and (cc) food and beverages expenditure at the hotel?