fixes #4602, close #4624

fixed comment in code snippet

Refactored `yii\web\User`.

fixed link

Fixed traslation mistake

Update docs for clientValidateAttribute()

Replaced backslashes with forward slashes in template path example [skip...

Backslash after alias causes 'Invalid path alias' exception in `\yii\BaseYii::getAlias`

Upgrade jquery.inputmask to v3.0.59

- `beforeValidateAll`
- `afterValidateAll`

fixes #4234, close #4559

Fix url

Enh #4581: Added ability to disable url encoding in `UrlRule`.

fix typo in define $flavors['gfm-comment']

fix typo Markdown->GithubMarkdown in $flavors['gfm-comment']