2015 scenario merged with Test2014 scenario

- Tracker fixes
- PLT
- Double gap in RE
- BHM
- BRM

This is a rebase of #3186 for @ianna. Only difference was:

        'Geometry/MuonCommonData/data/RPC2Gap/muonNumbering.xml',                                                                                                                                                               

in place of:

        'Geometry/MuonCommonData/data/v2/muonNumbering.xml',