fixed advanced app backend
use raw SQL for profiling.
Merge branch 'master' of github.com:yiisoft/yii2
Keep the current debug panel open.
Improved debug backtrace tracking.
Added default trace level setting.
Added logging of view files.
Improved log panel display.
Typo fix: read-to-use → ready-to-use

read-to-use → ready-to-use
Merge pull request #612 from maximal/patch-1

Typo fix: read-to-use → ready-to-use
method renaming.
Merge branch 'master' of github.com:yiisoft/yii2
moved JUI into official extensions.
updated alias.