Fix boolean checkbox if form-vertical
Fix boolean checkbox if form-vertical

rafaelfranca/simple_form-bootstrap,vaishalitekale/simple_form-bootstrap,pivotalcommon/simple_form-bootstrap,weixing2014/simple_form-bootstrap,pivotalcommon/simple_form-bootstrap,pivotalcommon/simple_form-bootstrap,vaishalitekale/simple_form-bootstrap,npy179/simple_form-bootstrap,npy179/simple_form-bootstrap,rafaelfranca/simple_form-bootstrap,vaishalitekale/simple_form-bootstrap,weixing2014/simple_form-bootstrap,weixing2014/simple_form-bootstrap,npy179/simple_form-bootstrap,rafaelfranca/simple_form-bootstrap