O2Physics

PWG-LF: spectra task, add compatibility with Run2 (#1356)

Change type Run2 trigger aliaslabels (#1350)

PWGMM: change namespace to avoid clash with O2 changes (#1354)

PWGDQ: fix error exception on vector when running on different datasets (#1352)

Fix for Mac not accepting not override marked overriding methods (#1351)