Restoring pdf (wrongly commented).

main/work/student_work.php

@@ -114,8 +114,8 @@ echo '<a href="'.api_get_path(WEB_CODE_PATH).'work/work.php?'.api_get_cidreq().'
         Display::return_icon('back.png', get_lang('BackToWorksList'), '', ICON_SIZE_MEDIUM).'</a>';
 
 if (api_is_allowed_to_edit()) {
-    /*echo '<a href="'.api_get_path(WEB_CODE_PATH).'work/student_work.php?action=export_to_pdf&studentId='.$studentId.'&'.api_get_cidreq().'">'.
-        Display::return_icon('pdf.png', get_lang('ExportToPDF'), '', ICON_SIZE_MEDIUM).'</a>';*/
+    echo '<a href="'.api_get_path(WEB_CODE_PATH).'work/student_work.php?action=export_to_pdf&studentId='.$studentId.'&'.api_get_cidreq().'">'.
+        Display::return_icon('pdf.png', get_lang('ExportToPDF'), '', ICON_SIZE_MEDIUM).'</a>';
 
     echo '<a href="'.api_get_path(WEB_CODE_PATH).'work/student_work.php?action=download&studentId='.$studentId.'&'.api_get_cidreq().'">'.
         Display::return_icon('save.png', get_lang('Download'), '', ICON_SIZE_MEDIUM).'</a>';