MRBS 1.12.2 等保2.0二级整改完整提交

包含：登录失败锁定、90天密码有效期、30分钟会话超时、
强制改密、登录审计日志、屏幕水印、企业背景图、
备案信息固定底部、favicon、JS空集合保护、
会话过期体验优化（403 JSON）、display_errors 关闭、
固定 key 根治 Integrity check failed 等全部改动

注意：config.inc.php/.htaccess/.user.ini 含敏感信息，
通过 .gitignore 排除，勿推送到公开仓库。

lib/CAS/README.md

@@ -0,0 +1,42 @@
+phpCAS
+=======
+
+phpCAS is an authentication library that allows PHP applications to easily authenticate
+users via a Central Authentication Service (CAS) server.
+
+Please see the wiki website for more information:
+
+https://apereo.github.io/phpCAS/
+
+Api documentation can be found here:
+
+https://apereo.github.io/phpCAS/api/
+
+
+[![Test](https://github.com/apereo/phpCAS/actions/workflows/test.yml/badge.svg)](https://github.com/apereo/phpCAS/actions/workflows/test.yml)
+
+Project is unmaintained
+-----------------------
+
+As of June 2024 this library is not actively maintained and looking for active developers & maintainers. The project is in an okay shape and in working order but needs a bit of steady maintenance or maybe even someone who wants to modernize it. We have also documented & automated a lot so I think it's nothing to worry about.
+
+Please contact the CAS project management team if you are interested: https://apereo.github.io/cas/developer/Project-Commitee.html or through the public mailing lists: https://apereo.github.io/cas/Mailing-Lists.html
+
+LICENSE
+-------
+
+Copyright 2007-2020, Apereo Foundation.
+This project includes software developed by Apereo Foundation.
+http://www.apereo.org/
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this software except in compliance with the License.
+You may obtain a copy of the License at:
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.