Class AliMUONCDB:

Class AliMUONCDB:
- Changed to namespace (remove constructor and destructor)
- Added new functions to ease the loading of Mapping, Magnetic Field and RecoParam from OCDB (OCDB path and run number must properly set before using any of these function)
- Moved from libMUONbase in libMUONrec

Class AliMUONESDInterface:
- Adding a flag in functions converting ESD track to MUON track to disable the refitting of track parameters at each cluster. That way, you do not need to load the proper RecoParam and magnetic field, but the drawback is that only the track parameters at first cluster, copied directly from ESD, is meaningful.

Macros:
- Remove the unnecessary access to geometry, mapping, magnetic field and/or recoParam
- Use the new functionalities of AliMUONCDB to load these informations from the OCDB when needed (except geometry for now)

Updated relevant READMEs

(Philippe P., Ivana)