Idon't know what there is to laugh about these days, but there was more than a hint of frivolity about the Scottish Parliament yesterday. It may, of course, have been because our dear leader was away, in China, arranging the next swap of pandas or other furry creatures, possibly even including himself, thus allowing MSPs to indulge their lighter side.  Or it may have been because there were storms raging around the building, and the Deputy First Minister, Nicola Sturgeon, had warned us about the risks incurred in merely stepping outside. Those who had turned up (which was, in fairness, most of them) seemed to have acquired that air of light-hearted bravado that can sometimes overtake hardy souls who have faced the elements - and survived.  anyway it gave the new Tory leader Ruth Davidson the