message: Pass useSparse as argument to task
diff: -AliAnalysisTask* AddTaskAnalysisOnlineQA()
  +AliAnalysisTask* AddTaskAnalysisOnlineQA(bool useSparse = 0)
  {
  - bool useSparse = 0;
  -
  //get the analysis manager
  AliAnalysisManager *mgr = AliAnalysisManager::GetAnalysisManager();
  if (!mgr) {
  