          <small id="settings_email_subject_help" class="form-text ">To include the id of the invoice in the subject, add the placeholder {id} where you want the id</small>
        </div>
</div>
<fieldset class="form-group">                
    <div id="settings_id_generation">
<div class="form-group">                
            <label class="control-label" for="settings_id_generation_strategy">Strategy</label><select id="settings_id_generation_strategy" name="settings[id_generation][strategy]" data-contro