Виджет инлайн-редактирования статусов

https://github.com/yupe/yupe/issues/1609
![img](http://i.imgur.com/ZbYsdxX.png)
Пример использования:
```php
array(
    'class'   => 'yupe\widgets\EditableStatusColumn',
    'name'    => 'status',
    'url'     => $this->createUrl('/page/pageBackend/inline'),
    'source'  => $model->getStatusList(),
    'options' => [
        Page::STATUS_PUBLISHED  => ['class' => 'label-success'],
        Page::STATUS_MODERATION => ['class' => 'label-warning'],
        Page::STATUS_DRAFT      => ['class' => 'label-default'],
    ],
),
```