Update TbHtml.php

When use:

<?php echo TbHtml::formActions(array(
TbHtml::submitButton(Yii::t('app', 'Login'), array('color' => TbHtml::BUTTON_COLOR_PRIMARY)),
TbHtml::resetButton(Yii::t('app', 'Reset')),
)); ?>

both buttons are rendered without gap between them, when there is a space, is drawn with a slight gap as:

<div class="form-actions">
<?php echo TbHtml::submitButton(Yii::t('app', 'Search'),  array('color' => TbHtml::BUTTON_COLOR_PRIMARY,));?>
<?php echo TbHtml::resetButton(Yii::t('app', 'Reset')); ?>
</div>