Add percentage saved to specials

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<file name="catalog/controller/module/special.php">
        <operation>
            <search position="before"><![CDATA[
            if ($this->config->get('config_review_status')) {
            ]]></search>
            <add><![CDATA[
			if ((float)$result['special']) {
				$saving_value = $result['price'] - $result['special'];
				$saving = round(($saving_value/$result['price'])*100, 0);
			} else {
				$saving = false;
			}
            ]]></add>
        </operation>
        <operation>
            <search position="after"><![CDATA[
            'name'    	 => $result['name'],
            ]]></search>
            <add><![CDATA[
			'saving' => $saving,
            ]]></add>
        </operation>
	</file>

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if ($this->config->get('config_review_status')) {

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if ((float)$result['special']) {
$saving_value = $result['price'] - $result['special'];
$saving = round(($saving_value/$result['price'])*100, 0);
} else {
$saving = false;
}

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'name' => $result['name'],

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'saving' => $saving,