merge all commits in one
Merged multithreadingPlusNewPlots from repository HuguesBrun
remove a forgotten dbe
remove the static eventnumber
Merge pull request #3739 from HuguesBrun/multithreadingPlusNewPlots

Migration of Higgs validation packages to DQMEDAnalyzer and DQMEDHarvester interface + add few plots in the Higgs validation directory