Fixes #1391: CDetailView: callables (including anonymous functions for PHP 5.3+) could be used as value generators of the attributes.
Merge branch 'master' of github.com:yiisoft/yii into 1391-cdetailview-value-closure

Conflicts:
	framework/zii/widgets/CDetailView.php
Change log adjusted. is_string replaced by is_callable.
Merge pull request #1405 from resurtm/1391-cdetailview-value-closure

Fixes #1391: CDetailView: callables (including anonymous functions for PHP 5.3+) could be used as value generators of the attributes.