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、登录页JS修复等全部改动

web/theme.inc

@@ -0,0 +1,16 @@
+<?php
+declare(strict_types=1);
+namespace MRBS;
+
+// Gets the styling appropriate to the theme.     If there isn't a styling file
+// present for the theme then the default styling is used.
+
+require_once "systemdefaults.inc.php";
+require_once "config.inc.php";
+require_once "Themes/default/styling.inc";
+// Overwrite the default with the specified styling if it exists
+$theme_file =  __DIR__ . "/Themes/$theme/styling.inc";
+if (is_file($theme_file) && is_readable($theme_file))
+{
+  require $theme_file;
+}