Adds support for timestamps beyond year 2038.

Если длина строки не проходит валидацию, то выводим сообщение об этом, а не длину.))

InvalidCallException, InvalidParamException, UnknownMethodException are now extended from SPL BadMethodCallException

```
PHP Notice – yii\base\ErrorException

Undefined offset: 3

in .../yiisoft/yii2/db/QueryTrait.php at line 269
```

issue #3143

`yii\console\controllers\AssetController::actionTemplate()` advanced to include `jsCompressor` and `cssCompressor` to the template.

Adjustments code according to the standards.
Adding missing PHPDoc comment.

Fixes #3121: `yii\base\Application::bootstrap` may fail to load some components if they are specified as class names

Fixes #3042: `yii\widgets\Pjax` should end application right after it finishes responding to a pjax request

Fixes #3066: `yii\db\mssql\Schema::getTableSchema()` should return null when the table does not exist.