A few more updates and fixes to the HLT Run2 menu

The following fixes have been integrated in the HLT menu:
- Migration to CMSSW_7_2_3_HLT4 ConfDB template
- HLT_PFMET110_PFMHT110 -> HLT_PFMET120_PFMHT120, CMSHLT-186
- Update calomet filter cut in HT+MET path, CMSHLT-191
- Fix of HLT_Mu25_TkMu0_dEta18_Onia, CMSHLT-192