Make async ajax

main/exercise/exercise.class.php

@@ -7417,7 +7417,6 @@ class Exercise
                 var params = '.$params.';
                 $.ajax({
                     type: "GET",
-                    async: false,
                     data: params,
                     url: "'.$url.'",
                     success: function(return_value) {

main/exercise/exercise_submit.php

@@ -1096,7 +1096,6 @@ if (!empty($error)) {
                 var saveDurationUrl = "'.$saveDurationUrl.'";
                 // Logout of course just in case
                 $.ajax({
-                    async: false,
                     url: saveDurationUrl,
                     success: function (data) {
                         calledUpdateDuration = true;
@@ -1264,7 +1263,6 @@ if (!empty($error)) {
                 Display::returnFontAwesomeIcon('spinner', null, true, 'fa-spin').'\');
             $.ajax({
                 type:"post",
-                async: false,
                 url: "'.api_get_path(WEB_AJAX_PATH).'exercise.ajax.php?'.api_get_cidreq().'&a=save_exercise_by_now",
                 data: dataparam,
                 success: function(return_value) {
@@ -1337,7 +1335,6 @@ if (!empty($error)) {
 
             $.ajax({
                 type:"post",
-                async: false,
                 url: "'.api_get_path(WEB_AJAX_PATH).'exercise.ajax.php?'.api_get_cidreq().'&a=save_exercise_by_now",
                 data: requestData,
                 success: function(return_value) {

main/inc/lib/document.lib.php

@@ -3565,7 +3565,6 @@ class DocumentManager
                     if (tempDiv.length == 0) {
                         $.ajax({
                             type: 'GET',
-                            async: false,
                             url:  '".$url."',
                             data: 'folder_id='+numericId,
                             success: function(data) {

main/lp/lp_controller.php

@@ -276,7 +276,6 @@ $htmlHeadXtra[] = '
                             type: "GET",
                             url: "'.$ajax_url.'",
                             data: params,
-                            async: false,
                             success: function(data) {
                                 $("#lp_item_list").html(data);
                             }