[Common] Many improvements to DCAs

- Small changes to dimuon invariant mass histograms
- Many new features for the DCAs
   - MCH and MFT standalone, but also MCH and MFT global and MFT - MCH subtracted DCAs
   - Trends as function of collision z
   - Transverse DCA(xy)
   - DCA as function of particle phi

Author: ppoava