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。

upgrade/34/post.inc

@@ -0,0 +1,43 @@
+<?php
+namespace MRBS;
+
+// Convert MONTHLY_SAMEDAY repeats into MONTHLY repeats with a specified month_relative (eg '2TU')
+
+require_once 'standard_vars.inc.php'; // to ensure the timezone is set
+
+// Get all the monthly sameday repeats.
+$sql = "SELECT T.id, T.start_time, A.timezone
+          FROM " . _tbl('repeat') . " T, " . _tbl('area') . " A, " . _tbl('room') . " M
+         WHERE T.rep_type=5
+           AND T.room_id=M.id
+           AND M.area_id=A.id";
+
+$res = $upgrade_handle->query($sql);
+
+// Save the current default timezone so that we can restore it at the end
+$old_tz = mrbs_default_timezone_get();
+
+$mods = array();
+
+while (false !== ($row = $res->next_row_keyed()))
+{
+  // We need to make sure that we have the correct timezone set when we work out
+  // the day of the month that this series repeats on
+  if (!empty($row['timezone']))
+  {
+    mrbs_default_timezone_set($row['timezone']);
+  }
+  $mods[$row['id']] = date_byday($row['start_time']);
+}
+
+foreach ($mods as $id => $month_relative)
+{
+  $sql = "UPDATE " . _tbl('repeat') . "
+             SET month_relative=?,
+                 rep_type=" . RepeatRule::MONTHLY . "
+           WHERE id=?";
+  $upgrade_handle->command($sql, array($month_relative, $id));
+}
+
+// Restore the original timezone
+mrbs_default_timezone_set($old_tz);