Pull Request 2 Dev 1.1

L32-47, there's an easy workaround for this po below: 
```php
foreach ($filter_options as $k => $v) {
    $selected = ($k == $filter_by) ? 'selected' : '';
    echo "<option value='{$k}' $selected>{$v}</option>";
}
```

more readable :smile: :+1: