Bump Fullcalendar from 6.1.20 to 7.0.0 amd convert existing code to comply with 7.0, also make calendar more printable

plugins/fullcalendar/packages/core/locales/zh-cn.global.js

@@ -1,36 +0,0 @@
-/*!
-FullCalendar Core v6.1.20
-Docs & License: https://fullcalendar.io
-(c) 2024 Adam Shaw
-*/
-(function (index_js) {
-    'use strict';
-
-    var locale = {
-        code: 'zh-cn',
-        week: {
-            // GB/T 7408-1994《数据元和交换格式·信息交换·日期和时间表示法》与ISO 8601:1988等效
-            dow: 1,
-            doy: 4, // The week that contains Jan 4th is the first week of the year.
-        },
-        buttonText: {
-            prev: '上月',
-            next: '下月',
-            today: '今天',
-            year: '年',
-            month: '月',
-            week: '周',
-            day: '日',
-            list: '日程',
-        },
-        weekText: '周',
-        allDayText: '全天',
-        moreLinkText(n) {
-            return '另外 ' + n + ' 个';
-        },
-        noEventsText: '没有事件显示',
-    };
-
-    index_js.globalLocales.push(locale);
-
-})(FullCalendar);