Merge branch 'master' of git://github.com/yiisoft/yii2
more doc [skip ci]
Fix PHPDoc
Unused InvalidConfigException
Merge pull request #4807 from mrarthur/patch-6

Unused InvalidConfigException
fixes typos in start-databases.md
Merge pull request #4808 from nenad-zivkovic/master

fixes typos in start-databases.md
Merge pull request #4806 from mrarthur/patch-5

Fix PHPDoc
Merge pull request #4804 from maxmirazh33/master

structure-extensions.md translated to Russian[skip-ci]
Used a single database and a single CLI entry point for all test types. Added faker to basic app dev requirements.
Fixes #4724: fixed example in "Creating your own rule classes"
Adds start-gii-crud-preview image to gii guide
Merge pull request #4809 from nenad-zivkovic/master

[ci skip] Adds start-gii-crud-preview image to the gii guide
Fixes #4812: Fixed search filter
Fixes #4762: Reverted automatic ID fix.
Used aliases for fixture directory definitions
Fixes #4812
Fixes #4247
Fixed method name in docs
Fixes #4126