Restructure navigation to match wireframe IA

[rdhyee]

Context

Hana's wireframe proposes a cleaner navigation structure than the current site.

Current nav

Goals, People, Information Architecture (Overview, Requirements, Metadata Model, iSamples Vocabularies), Outputs (conference talk, publications, etc.), Github repositories, Tutorials (many sub-items)

Wireframe nav

• Home
• Interactive Explorer
• How to Use ▾
• Information Architecture* ▾
• About ▾
• Related Research/Resources ▾

Changes needed

1. Update _quarto.yml sidebar/navbar
2. Consolidate Goals + People into "About" page
3. Split Outputs into "Published Research" and "Resources" (per Hana's note)
4. Create "How to Use" section
5. Keep Information Architecture but improve readability (Hana: "columns or accordion table")
6. Remove or archive stale items

Hana's notes

• "Requirements are a little muddy. Make table of contents more readable"
• "Metadata model doesn't have a link back to other pages"
• "Further divide vocabularies table? Hyperlinks make it harder to read"
• "Divide Outputs into Published research and Resources"