patch for alphabetical configs/splits

app.py

@@ -193,7 +193,7 @@ if len(dataset_df) > 0:
     selectable_configs = list(set(dataset_df["config"]))
     selectable_configs.sort(key=lambda name: name.lower())
 
-    if "-unspecified-" in config_set:
+    if "-unspecified-" in selectable_configs:
         selectable_configs.discard("-unspecified-")
         selectable_configs = ["-unspecified-"] + selectable_configs
 
@@ -209,7 +209,7 @@ if len(dataset_df) > 0:
         selectable_splits = list(set(dataset_df["split"]))
         selectable_splits.sort(key=lambda name: name.lower())
 
-        if "-unspecified-" in split_set:
+        if "-unspecified-" in selectable_splits:
             selectable_splits.discard("-unspecified-")
             selectable_splits = ["-unspecified-"] + selectable_splits