Some improvements on reset and dimensions (#2)

* Prevent PHP (7) Error

Solve error with strict standards: Only variables should be passed by reference

* Remove dimensions if any

* Comply with Zend_View_Helper_FormReset

Twitter_Bootstrap3_View_Helper_FormReset must be setup in the same way Zend_View_Helper_FormReset is setup, otherwise this will cause exception.

* Add support for "class" attrib

If adding elements to a form, class is lost. This is especially true for selects and such elements, which do not have a special view helper.
Added manual assignment of class if class is given.

library/Twitter/Bootstrap3/Form.php

@@ -434,6 +434,10 @@ public function addElement($element, $name = null, $options = null)
             // Load default decorators
             if ((null === $options) || !is_array($options)) {
                 $options = array();
+		//Class is maybe not properly transfered to this element. We'll add class if it exists here.
+		if($element->class){
+			$options['class'] = $element->class;
+		}
             }
 
             if (!array_key_exists('decorators', $options)) {

library/Twitter/Bootstrap3/View/Helper/FormReset.php

@@ -32,7 +32,7 @@ class Twitter_Bootstrap3_View_Helper_FormReset extends Zend_View_Helper_FormRese
      *
      * @return string The element XHTML.
      */
-    public function formReset($name, $value = null, $attribs = null)
+    public function formReset($name = '', $value = 'Reset', $attribs = NULL)
     {
         if (isset($attribs['class'])) {
             $attribs['class'] = 'btn ' . $attribs['class'];