public static function buttonFa ($text, $fa, $options = [])
		{
			$class = 'fa fa-' . $fa;
			if (!empty(trim($text)))
				$class .= ' margin';

			$icon = self::tag('i', '', [ 'class' => $class ]);
			if (!isset($options[ 'title' ]))
				$options[ 'title' ] = $text;
			if (isset($options[ 'raw' ]) and $options[ 'raw' ] == true)
			{
				unset($options[ 'raw' ]);

				return parent::button($icon . $text, $options);
			}
			else
			{
				unset($options[ 'raw' ]);

				return parent::button($icon . Yii::t('app', $text), $options);
			}
		}