Sweeping !455 from Rel-v34r0 to master. Whizard2 addition, Delphes-Gaudi-KKMC updates, energy path fix

Ghost Userrequested to merge
cherry-pick-2-b738d133-master into master

Whizard2 addition, Delphes-Gaudi-KKMC updates, energy path fix

See merge request !455 (merged)

Merge request reports