go back to the DQM generic client for performing the summary efficiency plots
fix the declaration of the histograms : now declare then directly in the eBooker
use the setBinLabel to set the label of the bins and not the Fill method on the fly ...
Merge pull request #4281 from HuguesBrun/fixHiggsDQMfor710

Fix in Higgs HLT validation DQM for multithreading