Translated messages in [[i18n\Formatter.php]]

Переведен tutorial-yii-integration.md

[skip ci] Update tutorial-i18n.md

Fixed: Wrong namespace in advanced app backend unit test classes #6919

fixes #6903

Update guides pt-BR [ci skip]

Fixes #6661: Hyperlinks that are enclosed within an exist form will use the same form for submission if they specify both of the `href` and `data-method` attributes

More correct usage of TimeStamp touch method

TimeStampBehavior PHPDoc update for the `touch()` method

Move backend config to common config after.

close #6875

Fixes #5663 and #5671: Added support for using `data-params` to specify additional form data to be submitted via the `data-method` approach

fixes #yiisoft/yii#3712

docs/guide-ja/helper-html.md - added [ci skip]

[Uk] Guide corrections [skip ci]

getQueryParam() and getBodyParam() doc edits

- Made yii\web\Request::getQueryParam() and getBodyParam()'s doc blocks more consistent with each other
- getQueryParam() was incorrectly stating that if $name was omitted, all of $_GET would be returned (but $name is required)