Turning off debug mode should apply optimizations

[samdark]

1. Turn off debug info collection and API:

• https://github.com/yiisoft/yii-debug/blob/master/config/params.php#L31
• https://github.com/yiisoft/yii-debug-api/blob/master/config/params.php#L10

2. https://github.com/yiisoft/docs/blob/master/guide/en/tutorial/performance-tuning.md if possible.
3. https://github.com/yiisoft/yii-cycle/blob/master/docs/en/reading-schema.md#schema-cache

[samdark]

See https://github.com/yiisoft/app/issues/166