Custom classes

[cbichis]

Hi,

One issue I noticed with the library is I cant add also some custom css classes directly when adding the form element.

    $this->addElement('text', 'date', array(
        'attribs' => [
            'onchange' => 'this.form.submit()',
            'class' => 'datepicker',
            'size' => 10,
            'maxlength' => 10,
        ],
        'value' => date('Y-m-d')
    ));

The class is overwrited by form-control.

I can append additional classes only after the form element is added.

    $class = $this->getElement('date')->getAttrib('class');
    $this->getElement('date')->setAttrib('class', $class.' datepicker');