vtiger 数据导出csv乱码修复

报表导出EXCEL，依然乱码，修复方法如下：

打开modules\Reports\ReportRun.php，修改：3090行、3099行、3111行、3123行

$worksheet->write(0, $count, iconv("UTF-8", "GBK", $key) , $header);
//原来 $worksheet->write(0, $count, $key , $header);

$worksheet->write($key+1, $dcount, iconv("UTF-8", "GBK", $value));
//原来 $worksheet->write($key+1, $dcount, utf8_decode($value));

$worksheet->write($rowcount, $count, iconv("UTF-8", "GBK", $translated_str));
//原来 $worksheet->write($rowcount, $count, $translated_str);

$worksheet->write($key+$rowcount, $dcount, iconv("UTF-8", "GBK", $value));
 //原来 $worksheet->write($key+$rowcount, $dcount, utf8_decode($value));