\yii\grid\ActionColumn incomplete anonymous functions signature fix.
Merge pull request #6584 from creocoder/yii-grid-action-column-incomplete-signature-fixes

\yii\grid\ActionColumn incomplete anonymous functions signature fix
\yii\grid\ActionColumn better phpDoc.
\yii\grid\ActionColumn better phpDoc.
Merge pull request #6587 from creocoder/yii-grid-action-column-php-doc

\yii\grid\ActionColumn better phpDoc.
docs/guide/output-data-widgets.md - revised [ci skip]
docs/guide/output-data-widgets.md link correction [ci skip]
docs/guide-ja/output-data-widgets.md - WIP [ci skip]
docs/guide-ja/output-data-widgets.md - completed [ci skip]
docs/guide-ja/output-data-widgets.md - link fixed [ci skip]
Merge pull request #6597 from softark/docs-guide-ja-output-data-widgets

Docs guide ja output data widgets [ci skip]
Merge pull request #6596 from softark/docs-guide-output-data-widget-revised

Docs guide output data widget revised [ci skip]