Added fallback for datepicker language files
Fixes #6564: removed mentioning of creating files manually in case of using PhpManager
Spanish guide Html helper
Update helper-html.md
Minor fixes for helper-html.md
Update CHANGELOG.md
Merge pull request #6570 from yiisoft/date-picker-fallback

Added fallback for datepicker language files
Merge pull request #6571 from larnu/spanish_docs

Spanish guide Html helper [skip ci]
Merge pull request #6574 from larnu/doc_fixes

Minor fixes for helper-html.md [skip ci]
Revert "Minor fixes for helper-html.md [skip ci]"
Merge pull request #6575 from yiisoft/revert-6574-doc_fixes

Revert "Minor fixes for helper-html.md [skip ci]"
update spanish helper-html.md

close #6578
\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]