Added call stack display for DB debug panel.
Fixes #599
Changed default value of Logger::traceLevel.
Ensure correct type.
ListView WIP
Support relative route in Controller::createUrl()
Doc fix.
Merge branch 'master' of github.com:yiisoft/yii2
Finished ListView.
Merge branch 'master' of github.com:yiisoft/yii2
Fixes #659.
Fixes #660.