* Fix leaderboard gap to use display width instead of hardcoded values
- Replace hardcoded spacing (40px) with display_manager.matrix.width
- Update gap calculation to use display width for blank screen simulation
- Fix display width logging to show correct value
- Ensures gap between league rotations matches actual display width
* Add display width gap to news manager
- Add display width gap at the beginning of news content
- Update total_scroll_width calculation to include display width gap
- Modify create_scrolling_image to draw text after display width gap
- Ensures news starts with blank screen period matching display width
- Removed duplicate create_scrolling_image method
* add Live, Recent, Upcoming toggles to display modes on website
- Added config_type='main' to FormData when submitting display form
- Added proper HTTP error handling to catch non-JSON responses
- This fixes the 'Unexpected token <' JSON parsing error when saving display settings
