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
fix incorrect file status.
Fixes #3581: Added `yii\validators\CompareValidator::type` to support type conversion before comparing values
Fixes #5047.
WIP
extracted date format converting to a helper class

adding and reworking the conversion of:
- ICU to PHP
- PHP to ICU
- ICU to JUI
- PHP to JUI