CP-related signal datasets and campaign refactoring.

[hephysicist]

1. Moved all campaigns that are not in use to /old_campaigns
2. Added ggH, VBF, VH signals splited into different CP hypotheses:

• ggH has 3 production hypotheses: CP-odd, CP-even, Max mixing, and 4 decay hypotheses: CP-odd, CP-even, Max mixing, and uncorrelated (flat)
• VBF and VH have only the decay hypotheses