A.F....... [ZBX-9065] Fix default value for screens_items.max_columns in PHP schema.

git-svn-id: svn://svn.zabbix.com/trunk@50951 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
.......... [ZBX-9065] moved ChangeLog entries to the proper place

git-svn-id: svn://svn.zabbix.com/trunk@50952 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2