Fixed #1933: In the elements CHtml::activeDropDownList, CHtml::ListBox, CHtml::DropDownList multiple fixed bug with multiple parammetrom if false
update changelog #1933
Merge branch 'master' of https://github.com/yiisoft/yii.git
small fixed #1933: $var!==false -> !empty($var)
small fix remove #1933: remove isset
Merge branch 'master' of https://github.com/yiisoft/yii.git
Merge pull request #1961 from adminnu/master

#1933: fixed using "multiple" parameter with a value of false in CHtml::activeDropDownList, CHtml::ListBox and CHtml::DropDownList