DQMOffline egamma electrons updates

[gzevi]

A few more fixes to DQMOffline/Egamma/Electrons (continuation of PR #9010).

• Avoid NaNs in m_ee plots (check > 0 before taking square root)
• TagAndProbe folder now shows plots (it was empty because of wrong supercluster collection to match with)
• Electron selection was not being applied to m_ee plots, so m_ee plot was the same across folders.

[cmsbuild]

A new Pull Request was created by @gzevi for CMSSW_7_5_X.

DQMOffline egamma electrons updates

It involves the following packages:

DQMOffline/EGamma

@cmsbuild, @danduggan, @nclopezo, @deguio can you please review it and eventually sign? Thanks.
@rociovilar this is something you requested to watch as well.
You can sign-off by replying to this message having '+1' in the first line of your reply.
You can reject by replying to this message having '-1' in the first line of your reply.
If you are a L2 or a release manager you can ask for tests by saying 'please test' in the first line of a comment.
@nclopezo you are the release manager for this.
You can merge this pull request by typing 'merge' in the first line of your comment.

[cmsbuild]

+1
Tested at: 0382526
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-9082/4688/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-9082/4688/summary.html

[deguio]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_5_X IBs unless changes (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @nclopezo, @smuzaffar

[davidlange6]

+1