[Common] Added further distinction of muon origins in MCH

Two changes:

- Small bugfix changing the definitions of left-right to quadrants 0 and 3 and 1 and 4, respectively.
- Distinguished the top-bottom and bottom-top origin studies for dimuons from the MCH chamber 1 to explicitly say which of the two muons came from where. The same is done for left-right and right-left.

Author: ppoava