add hint to addon boxes

configure_privat_mail.tpl

@@ -404,9 +404,12 @@
                                             <div class="panel-body">
                                                <input type="checkbox" name="addons[{$addon.id}]"{if $addon.status} checked{/if} />
                                                 <span class="panel-addon-name">{$addon.name}</span>
-												<span class="panel-addon-price">{$addon.pricing}</span>
+							<span class="panel-addon-price">{$addon.pricing}</span>
                                                 <p class="text-muted">{$addon.description}</p>
                                             </div>
+                                            {if $addon.allowsQuantity === 2}
+	                                        {include file="templates/orderforms/{$carttpl}/addon-hint.tpl"}
+    	                                    {/if}
                                         </div>
                                     </div>
                                 {/foreach}