Create "approach set" and "approach content" terms

[faridseifi]

• Add them to the PSO ontology
  **- Update the knowledge base templates (add approach set and remove approach content in the relevant message templates)
• Add approach set to the causal pathways (check if approach content is there)**
• Update the PFP code (update the approach content in the namespaces)

[faridseifi]

FPF Analytical data.xlsx