Validation code for trigger QuadJet+TripleBTag

Validation code for the trigger paths:

HLT_QuadJet45_TripleCSV0p5
HLT_DoubleJet90_Double30_TripleCSV0p5
and the prescaled:
HLT_QuadJet45_DoubleCSV0p5
HLT_DoubleJet90_Double30_DoubleCSV0p5

added with the JIRA ticket:
https://its.cern.ch/jira/browse/CMSHLT-128

An output file is in:
/afs/cern.ch/user/s/sdonato/AFSwork/public/DQM_4b.root

Aligned with CMSSW_7_3_X_2014-11-06-0200
(it includes HiggsDalitz and DoubleHinTaus plots)

cc: @arizzi @cvernier @jasperlauwers @hunge @HuguesBrun