Implement foundational UI components including navigation bar,
CSS styling, and improved rankings page.
Changes:
- Add navigation bar with links to Rankings, Profile, Schedule, Admin
- Add comprehensive CSS styling for tables, forms, buttons, alerts
- Improve rankings page with profile links
- Support conditional navigation based on authentication status
- Implement EloCalculator service for 2v2 Euchre matches
- Create background job processing with GoodJob
- Add single match entry form
- Add CSV upload for batch match entry
- Create player rankings view
- Add database schema for matches and elo snapshots
david