This commit introduces the ability to update tournament details, including name and date, in the backend and frontend. The new `updateTournament` method is added to the `tournamentController` and `tournamentService`, allowing for validation and error handling. The frontend `TournamentsView` is updated to include input fields for editing tournament details, with real-time updates reflected in the UI. Additionally, new CSS styles are introduced for improved layout and user interaction, enhancing the overall experience in tournament management.
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