Refactor get_leaderboard_df to handle multiple subsets and improve column selection and hiding

src/populate.py

@@ -17,8 +17,8 @@ def get_leaderboard_df(results_repo):
         subset_df = subset_data.to_pandas()
         subset_df = subset_df.sort_values(by="Total", ascending=False)
         subset_df = subset_df.round(2)  # Round all numeric columns to two decimal places
+        subset_df["Dataset Version"] = [subset] * len(subset_df)
         print(subset_df)
-        subset_df["dataset_version"] = [subset] * len(subset_df)
         subset_dfs[subset] = subset_df
     df = pd.concat(subset_dfs.values())
     return df, subset_dfs.keys()