updated german translation
Fixes #5070: Gii controller generator should use controller class name instead of controller ID to specify new controller
Fixes #4395: Added `$checkAjax` parameter to `yii\web\Response::redirect()` to support default redirection behavior for AJAX/PJAX requests
Html helper guide chapter
spanish docs DB DAO
Merge pull request #6364 from larnu/spanish_docs

spanish docs DB DAO [skip ci]
Fixes #6366
docs/guide/db-query-builder.md - small fix [ci skip]
docs/guide-ja/db-query-builder.md - started translation [ci skip]
docs/guide-ja/db-query-builder.md - WIP [ci skip]
docs/guide-ja/db-query-builder.md - WIP [ci skip]
docs/guide-ja - changed "空っぽ" to "空" [ci skip]
docs/guide-ja/db-dao.md - changed "プリペア" to "準備" [ci skip]
docs/guide-ja/db-query-builder.md - completed [ci skip]
Merge pull request #6370 from softark/docs-guide-ja-db-query-builder

docs/guide-ja/db-query-builder.md added [ci skip]
Merge pull request #6369 from softark/docs-db-query-builder-fix

docs/guide/db-query-builder.md - small fix [ci skip]
Minor fixed for file upload guide
Added `yii\web\AssetConverter::$forceConvert`
Plain `echo` replaced by `stdout()` at `yii\console\AssetController`
Plain `echo` replaced by `stdout()` at `yii\console\MessageController`