Change common photons name
In order to follow changes with Phys package, StdLooseAllPhotons is now StdLoosePhotons. Changed all pieces of code in Stripping Selections affected.
The changes solve failing tests on StrippingSelections due to the removal of StdLooseAllPhotons. The discussion of these changes is in Phys!619 (merged)
Some tests on StrippingArchive will still fail, as S21r1p1 is not marked as outdated yet. More info on the tests is found in the comparison builds
Edited by Alejandro Alfonso Albero