Converted *Ajax into *Fetch (because we use the Fetch API, not jQuery.ajax)

dev/Common/Globals.js

@@ -101,8 +101,5 @@ dropdownVisibility.subscribe((value) => {
  * @type {*}
  */
 export const data = {
-	__APP__: null,
-	iAjaxErrorCount: 0,
-	iTokenErrorCount: 0,
-	bUnload: false
+	__APP__: null
 };

dev/Common/Links.js

@@ -156,14 +156,6 @@ export function change(email) {
 	return serverRequest('Change') + encodeURIComponent(email) + '/';
 }
 
-/**
- * @param {string} add
- * @returns {string}
- */
-export function ajax(add) {
-	return serverRequest('Ajax') + add;
-}
-
 /**
  * @param {string} requestHash
  * @returns {string}