Geometry data xml description

* Remaining XML data files from external data package are now back in CMSSW (as discussed with Giulio)
* Upgrade scenarios up-to-date
* New FastSim scenario for PhaseI (note it's in PhaseI/Forward) 
* Geometry/CaloEventSetup corrections for HE corner and center references used in a test
* Geometry/MuonCommonData tag V01-08-06 was taken with changes in GEM in v4: Correcting the partitioning og 8-etaPartition GEM chamber