WIP
Fixed typo [skip ci]
Merge pull request #5014 from yii2-chinesization/master

Chinese Translation for last month
Edited Russian translation of Upgrading from Version 1.1 guide
Edited Russian translation of intro to Yii
Edited Russian translation of REST Authentication guide
Edited Russian translation of REST Controllers guide
Edited Russian translation of REST Quick Start guide
Finished console Gii.
Merge commit '81c3c48c53d5087be681fc5472a837bc4660ca12' into console-gii

Conflicts:
	framework/console/controllers/HelpController.php
Finished console Gii feature.
Merge pull request #5024 from Skysplit/pl-docs

[skip ci] Added polish guide - README.md
Fixes #5020: Fixed fixture path in advanced app tests console entry script
updated gii doc. [skip ci]
Replaced tabs with spaces
Fixed advanced app fixture data path
updated README.md for gii extension [skip ci]
Fixes #5039: `UniqueValidator` and `ExistValidator` did not respect query conditions added by default scope
Fixes #5006.
Fixes #4905: ActiveForm::$validationDelay doesn't delay after keyrelease when $validateOnType=true