debugger tool WIP
Merge branch 'master' of https://github.com/yiisoft/yii2
Make multisort compatible with Sort

Test code
```php
$orders = $this->getSort()->getOrders();
ArrayHelper::multisort($data, array_keys($orders), array_values($orders));
```
Update phpDoc
debug toolbar WIP
Merge branch 'master' of https://github.com/yiisoft/yii2
Add unit test
Logger: getTag()/setTag() error fixed.
Merge pull request #272 from slavcodev/patch-1

Make multisort compatible with Sort