add no replies class to navigator

public/src/modules/navigator.js

@@ -440,7 +440,7 @@ define('navigator', [
 		count = value;
 		navigator.updateTextAndProgressBar();
 		setThumbToIndex(index);
-		toggle(count > 1);
+		toggle(count > 0);
 	};
 
 	navigator.show = function () {
@@ -464,6 +464,7 @@ define('navigator', [
 		}
 
 		paginationBlockEl.toggleClass('ready', flag);
+		paginationBlockEl.toggleClass('noreplies', count <= 1);
 	}
 
 	navigator.delayedUpdate = function () {
@@ -523,7 +524,7 @@ define('navigator', [
 			setThumbToIndex(index);
 		}
 
-		toggle(count > 1);
+		toggle(count > 0);
 	};
 
 	navigator.getIndex = () => index;