Add directive to accept .csv files to file upload field in new.php

new.php

@@ -44,7 +44,7 @@
 <div class="uploader">
     <form enctype="multipart/form-data" action="upload.php" method="POST">
         <label for="fileToUpload">' . $csvxml_overview['select_csv_file_for_upload'] . '</label>
-        <input name="uploaded" type="file" id="fileToUpload" required />
+        <input name="uploaded" type="file" accept=".csv" id="fileToUpload" required />
         <button type="submit">' . $csvxml_overview['upload'] . '</button>
     </form>
 </div>