fix links and format [skip ci]
fix wrong file name [skip ci]
Guide-zh-CN intro-yii.md proofread.
Guide-zh-CN intro-upgrade-from-v1.md proofread.
Merge pull request #5 from AbrahamGreyson/master

proofread intro-yii.md and intro-upgrade-from-v1.md
proofreading [skip ci]
proofreading [skip ci]
proofreading [skip ci]
Russian translate concept-service-locator. md

Added Russian translate docs\guide-ru\concept-service-locator.md.
Revert "Russian translate concept-service-locator. md"

This reverts commit 520f65e15bf0bafe9c8c1f293f16620c9ae90f78.
Russian translate concept-service-locator.md

Added Russian translate docs\guide-ru\concept-service-locator.md
Russian translate concept-service-locator.md

Added Russian translate docs\guide-ru\concept-service-locator.md
minor fix [skip ci]
fix typo in phpdoc of yii\redis\Connection [skip ci]
Merge pull request #4161 from IndeedPlusPlus/patch-1

fix typo in phpdoc of yii\redis\Connection [skip ci]
Fixes #3992
Fixes #4147
Merge branch 'master' of git://github.com/yiisoft/yii2
Fixes #4135
translate concept-aliases and autoloading [skip cii]
Added unit tests for Widget\ActiveField