♻️ Refactor owner uploads and slideshow controllers

Remove unused section management logic from the owner uploads controller to streamline functionality. Enhance the slideshow controller by adding queue size management, improving media transition animations, and implementing keyboard shortcuts for better user experience. Update the slideshow view to reflect these changes, including a centered queue display and QR code toggle functionality. :sparkles: Enhance event type handling in event updates Add event type label to JSON response in events controller for better clarity. Implement a helper method to generate event type labels for questions, and update the date question label dynamically in the frontend based on the event type. Adjust the dashboard view to display the personalized question text.