minor improve buttom, and add date in export

main/gradebook/gradebook_flatview.php

@@ -133,7 +133,7 @@ if (isset ($_GET['exportpdf']))	{
 		$html .= '<h1 align="center">'.get_lang('FlatView').'</h1>';
 
 		$html .= '<p><strong>'.$report_name.'</strong></p>';
-		$html .= '<p><strong>'.api_convert_and_format_date().'</strong></p>';
+		$html .= '<p><strong>'.api_convert_and_format_date(date('Y-m-d', time()), 2).'</strong></p>';
 		$html .= '<p><strong>'.get_lang('By').': '.$creator.'</strong></p>';
 
 		$columns = count($printable_data[0]);

main/gradebook/lib/fe/dataform.class.php

@@ -49,7 +49,7 @@ class DataForm extends FormValidator {
 		$this->addElement('static','label','',get_lang('ChooseOrientation'));
 		$this->addElement('radio', 'orientation', null, get_lang('Portrait'), 'portrait');
 		$this->addElement('radio', 'orientation', null, get_lang('Landscape'), 'landscape');
-		$this->addElement('style_submit_button', 'submit', get_lang('Ok'), 'class="save"');
+		$this->addElement('style_submit_button', 'submit', get_lang('Export'), 'class="upload"');
 		$this->setDefaults(array (
 			'orientation' => 'portrait'
 		));

main/gradebook/lib/fe/exportgradebook.php

@@ -124,7 +124,7 @@ function export_pdf_with_html($headers_table, $data_table, $headers_pdf, $footer
 	}
 	$footer .= '</table>';
 	
-	$footer .= '<div align="right" style="font-weight: bold;">{PAGENO}</div>';
+	$footer .= '<div align="right" style="font-weight: bold;">{PAGENO}/{nb}</div>';
 	
 	// preparing content pdf		
 	$css_file = api_get_path(TO_SYS, WEB_CSS_PATH).api_get_setting('stylesheets').'/print.css';