Merged from-CMSSW_7_0_0_pre11_tracking_as_independentBUGfix from repository mtosi
add new parameters in order to specify track selections which define the numerator and denominator in the FractionOfGoodTracks (which is actually used for highPurity tracks)
Merge pull request #2207 from mtosi/from-CMSSW_7_0_0_pre11_tracking_as_independentHPfraction

Tracking DQM -- FractionOfGoodTracks back to standard distribution