7x: fix ecal cell orientation in TGeo geometry

[alja]

Fix positioning of ecal cells.
Set TGeoVolume color as defined in its TGeoMaterial color.

[cmsbuild]

A new Pull Request was created by @alja (Alja Mrak-Tadel) for CMSSW_7_1_X.

7x: fix ecal cell orientation in TGeo geometry

It involves the following packages:

Fireworks/Geometry

@cmsbuild, @alja, @Dr15Jones, @ktf, @nclopezo can you please review it and eventually sign? Thanks.
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.
@nclopezo, @ktf 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: b501f72
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5175/1943/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-5175/1943/summary.html

[alja]

+1

[alja]

This PR goes on top of #5246

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_1_X IBs unless changes (tests are also fine). @nclopezo, @ktf can you please take care of it?