migration to DQMEDHarvester
running version with no plots saved. convention: Online
running version with efficiency plots saved. dqmSaver.convention: Offline
replaced last calls to DQMStore with IBooker methods
Merge branch 'enhanceIBookerIGetter' of git://github.com/deguio/cmssw into egammaofflinehlt_dqmedharvester_migration to have pwd() and goUp() methods from IBooker.
Merge pull request #3740 from thomreis/egammaofflinehlt_dqmedharvester_migration

DQM -- HLTriggerOffline/Egamma DQMEDHarvester migration