Merge pull request #3607 from Ragazzo/limit_feature_for_migrations

limit applied to migration
Merge pull request #3629 from makroxyz/master

fix italian translation
Hide menu container tag when items is empty
Fixed the bug that requesting protected or private action methods would cause 500 error instead of 404
Removed unused imports, added missing phpdoc
Merge branch 'master' of github.com:yiisoft/yii2
Changelog
Fix `yii\helpers\FileHelper::copyDirectory()` pattern not working
generated mimeType detection file from apache http mime.types file

MimeTypeController generates a map of file extensions to MIME types

It uses `mime.types` file from apache http located under
http://svn.apache.org/viewvc/httpd/httpd/trunk/docs/conf/mime.types?view=markup

This file has been placed in the public domain for unlimited
redistribution,
so we can use it and ship it with Yii.

see also yiisoft/yii#2851 and yiisoft/yii#2857
changelog
Merge PR #3643 branch 'mime-types-from-apache' of github.com:yiisoft/yii2

* 'mime-types-from-apache' of github.com:yiisoft/yii2:
  changelog
  generated mimeType detection file from apache http mime.types file

Conflicts:
	framework/CHANGELOG.md
Fixes #3636: Hide menu container tag with empty items in `yii\widgets\Menu`
Merge remote-tracking branch 'origin/master'

Conflicts:
	framework/CHANGELOG.md
 Added comment about $currency when it is null
changelog
Merge branch 'defaultValueValidator' of github.com:Alex-Code/yii2 into Alex-Code-defaultValueValidator

Conflicts:
	framework/CHANGELOG.md
Merge pull request #3445 from Alex-Code/getValue

Check if property is set
Renamed `Formatter::currencySymbol` to `currencyCode`
Changelog
Fixes typo