Added ability to operate nested and complex attributes via `yii\authclient\BaseClient::normalizeUserAttributeMap`
Additional check added to `yiiunit\extensions\authclient\BaseClientTest::testNormalizeUserAttributes()`
Update authorization guide

and Remove TBD from readme.md where it is no longer needed

close #5430
Fix spanish docs [skip ci]
Merge pull request #5437 from pana1990/guide-es

Fix spanish docs [skip ci]
Fixes #5423: `yii\behaviors\Cors` causes "undefined index" error when its `cors` is configured
Merge branch 'master' of git://github.com/yiisoft/yii2

Conflicts:
	framework/CHANGELOG.md
Doc links fix
correcting word
Removed unnecessary token generation. We already have it.
Merge pull request #5449 from faxriddin/master

[skip ci] correcting word
updated formatter docs and allow using DateTimeImmutable

see http://derickrethans.nl/immutable-datetime.html
by @derickr
Fixed `yii\mongodb\ActiveRecord` unable to fetch 'hasMany' referred by array of `\MongoId`
Merge branch 'master' of github.com:yiisoft/yii2
translation_to_uzbek
Update README.md
typo fix

close #5455
typo fix

close #5454
guide improvement about default values
fix code style php5.4 syntax

close 5458