spanish docs Events
Merge pull request #6390 from larnu/spanish_docs

spanish docs Events [skip ci]
Add File API detection to client file validator

Fixes #6345
Fixes #6381: Client-side file validation should be disabled if the browser does not support it
Fixes #5494: Added support for specifying a menu header as a configuration array in `yii\bootstrap\Dropdown`
Fixes #5005: Added support to suppress loading the same CSS files in AJAX responses
Spanish docs URL Helper
docs/internals-pt-BR/translation-workflow.md - update [skip ci]
docs/guide-pt-BR/structure-controllers.md - translate [skip ci]
docs/guide-pt-BR/structure-models.md - translate [skip ci]
docs/guide-pt-BR/README.md - update [skip ci]
docs/guide-pt-BR/start-installation.md - update [skip ci]
Fixed a few typos in Html helper guide
Merge pull request #6394 from larnu/spanish_docs

Spanish docs URL Helper [skip ci]
Merge pull request #6396 from nirvana-msu/patch-1

Fixed a few typos in Html helper guide
Merge pull request #6395 from davidsonalencar/master

Update guides pt-BR [skip ci]
added changelog merge to release command

fixes #5975
prepare for 2.0.1 release
prepare for next release.