 wicket:id="saveButton" type="submit" class="btn btn-primary">Save</button>
                                        <button wicket:id="previewButton" type="button" class="btn btn-success">Preview</button>
                                        <div wicket:id="mailingPreviewModal"></div>
                                        <button wicket:id="sendTestMailButton" type="button" class="btn btn-info">Send test e-mail</button>
                                    </div>
                                </div>
 