Add ADRs and AFs to global legal search

[patphongs]

What we're after:

The search across all legal resources on the legal resources landing page needs to include Alternative Dispute Resolutions and Administrative fines.

Related issue: https://github.com/fecgov/fec-cms/issues/6282

Action items

• [x] List new legal searches according to mockup
• [x] Change title on global legal search to "Search across legal resources" - remove "all"
• [x] For legal search titles that need to wrap, tighten up the line height so they look like separate names. Currently they blend together. Suggested: 1.4
• [x] Modify link in Legal resources top-level navigation to "Search across legal resources"

Completion criteria

• [ ] ADRs and AFs are now searchable from the global legal search

Screenshots

Updated list of legal search options

https://www.fec.gov/legal-resources/

Updated list with dropdown

https://www.fec.gov/legal-resources/

Updated list on legal search results page

https://www.fec.gov/data/legal/search/?search_type=all&search=contribution

Updated top nav