Fixes #3358: Removed automatic CSRF meta tag generation by `View`. Added `Html::csrfMetaTags()` and its call to main layout files
Application templates refactoring
Fixes #3793: Changed inline autocomplete hints style to get more IDEs support
Fixes #4071: `mail` component renamed to `mailer`, `yii\log\EmailTarget::$mail` renamed to `yii\log\EmailTarget::$mailer`
Missing files for #4071
made mcrypt a framework requirement
Fixes #3992 Fixes #4147
Switched to Codeception 2.0.* for application template tests
typo
Merge remote-tracking branch 'upstream/master'