Removed @property declaration
Added more docs about second param.
Merge pull request #2066 from Ragazzo/CComponent-attachBehavior-method-fix

Added more docs about second param for CComponent::attachBehavior()
Merge pull request #2065 from Ragazzo/CDbTestCase-property-fix

Removed @property declaration in CDbTestCase
doc fix
optimized by replacing a function reference with direct syntax
Merge pull request #2071 from and-ers/master

Optimized null check