uploading csv with Arabic character /CSV file extension UTF-8

Problem/Motivation

-when upload Arabic character you will face problem when write characters in csv file will shown like ?????
-when uploading the csv headers not matching so will give you an error that un index filed

the proposed solution

1-add echo "\xEF\xBB\xBF"; in CSVIntroductionForm.php line 228

if (file_exists($path)) {
unlink($path);
}
echo "\xEF\xBB\xBF";
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2- add $header = str_replace( "","", $header); in CSVImportForm.php line 230
we use replace here cause CSV file has character came from csv utf-8 file looks like .
foreach ($headers as $index => $header) {
$header = iconv('UTF-8', 'Windows-1251//IGNORE', $header);
foreach ($fields['product'] as $key => $field) {

--------------------------------------

3- add $header = str_replace( "","", $header); in CSVUpdateForm.php line 214
we use replace here cause CSV file has character came from csv utf-8 file looks like .
foreach ($headers as $index => $header) {
$header = iconv('UTF-8', 'Windows-1251//IGNORE', $header);
foreach ($fields['product'] as $key => $field) {