Normalise classname to remove non alpha chars

app/Helper.php

@@ -33,4 +33,12 @@ function title_color($hex)
     } else {
         return ' white';
     }
-}
+}
+
+
+function className($name)
+{
+    $name = preg_replace('/\PL/u', '', $name);
+    return $name;
+}
+