Fixes #1609: Adjusted code style, added some docs
Typo in changelog
Updated GII changelog
Merge pull request #1695 from lucianobaraglia/master

Typo in changelog [skip ci]
Merge pull request #1693 from Ragazzo/debug_log_panel_improvements

debug module log panel improved
Merge branch 'master' of github.com:yiisoft/yii2
Refactored unit tests.
improved database panel in debug module
Merge pull request #1697 from Ragazzo/debug_module_db_panel_improvements

improved database panel in debug module
doc fix.
added README for extensions.
improved debug module profile panel
Using constants instead of literals in Behavior
Removed redundant code in detachBehaviors()

After ensureBehaviors() call $this->_behaviors is an array already.
And since detachBehavior() unsets elements in $this->_behaviors, $this->_behaviors turns out to be an empty array after all iterations.
added default mail config to application.
Fixes #1701.
Merge pull request #1703 from crtlib/patch-2

Removed redundant code in detachBehaviors()
reverted $isValid for events.
end of line fix
Fixed build break.