Reformat code te be PSR-2 compatible
Merge pull request #2764 from SonicGD/go-for-psr-2

Reformat code to be PSR-2 compatible
Fixed test break.
Fixed typo in FilterValidator for skipping array values.
Merge pull request #2767 from ZhandosKz/filter_validator_skip_on_array

Fixed typo in FilterValidator for skipping array values.
typo fix in gii.md
Merge pull request #2769 from qiansen1386/patch-3

typo fix in gii.md
fixed requirements checker once again...
reverted wrong changes after #2764

- readded removed file
- readded use statement to migration template
GII generated files changes according to PSR2
Merge pull request #2771 from lucianobaraglia/gii-psr2

GII generated files changes according to PSR2
upd for psr2
Added return value for User::logout().
Merge branch 'master' of git://github.com/yiisoft/yii2 into fix-gridview-url
fix
changelog
Merge pull request #2760 from AlexGx/fix-gridview-url

fix GridView filterUrl bug
Tab to spaces conversion.
Added $checkSession parameter to User::getIsGuest() and getId().
Fixes #497: Removed `\yii\log\Target::logUser` and added `\yii\log\Target::prefix` to support customizing message prefix