Mod buttons: show Resume Round button when round is closed/paused

src/public/script.js

@@ -365,7 +365,7 @@ function renderRoundButtons(){
     } else {
         btn.innerHTML='▶ OPEN ROUND';
         btn.className='btn btn-g btn-full';
-        resumeBtn.style.display='none';
+        resumeBtn.style.display='block';
     }
 }