.......... [ZBXNEXT-826] updated release version [2.3.6]; updated API version [2.3.6]

git-svn-id: svn://svn.zabbix.com/trunk@48785 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
..F....... [ZBX-8532] fixed frontend messaging sounds not playing on IE11 and playing in loop if set to play once on other browsers

git-svn-id: svn://svn.zabbix.com/trunk@48789 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2