Update tracking MC validation scripts

[makortel]

This PR integrates the developments on tracking MC validation scripts of the past few months. The developments consist of new plots, tuning of existing plots, and adding a ratio pad. In addition there are two new scripts: vertexCompare.py being similar to existing trackingCompare.py but for vertex plots, and makeTrackValidationPlots.py being similar to trackingCompare.py but being simpler to use by taking the list of DQM files via command line arguments (requested by @lveldere).

Rebased on top of 7_5_0_pre4, should have no effect on central workflows.

@rovere @VinInn

[cmsbuild]

A new Pull Request was created by @makortel (Matti Kortelainen) for CMSSW_7_6_X.

Update tracking MC validation scripts

It involves the following packages:

Validation/RecoTrack
Validation/RecoVertex

@cmsbuild, @danduggan, @deguio can you please review it and eventually sign? Thanks.
@GiacomoSguazzoni, @rovere, @VinInn, @appeltel, @cerati, @wmtford, @istaslis, @dgulhan, @venturia this is something you requested to watch as well.
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[deguio]

+1

[cmsbuild]

+1
Tested at: 549f45d
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-9882/5720/summary.html

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_6_X IBs (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @Degano, @smuzaffar

[davidlange6]

+1

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-9882/5720/summary.html