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/upgrade/57/mysql.sql

@@ -0,0 +1,4 @@
+# Extend the length of the id column.  32 was stoo short for some systems.
+
+ALTER TABLE %DB_TBL_PREFIX%sessions
+  MODIFY id VARCHAR(255);

web/upgrade/57/pgsql.sql

@@ -0,0 +1,4 @@
+-- Extend the length of the id column.  32 was stoo short for some systems.
+
+ALTER TABLE %DB_TBL_PREFIX%sessions
+  ALTER COLUMN id TYPE varchar(255);