auto enable/disable proceed button

script.js

@@ -72,12 +72,14 @@ async function run() {
 
     function new_game() {
         textareaGameDataInput.value = load_default_game_data();
+        checkGameData();
         // we don't need to look at the default game data, so skip ahead to the image page
         buttonGameDataProceed.click();
     }
 
     function clear_game() {
         textareaGameDataInput.value = "";
+        checkGameData();
     }
 
     buttonNewGame.addEventListener("click", new_game);