..F....... [ZBX-2603] added validation while working with regular expressions


git-svn-id: svn://svn.zabbix.com/trunk@46953 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
........S. [ZBX-8243] added log message when the reason for an item being in an unsupported state changes

git-svn-id: svn://svn.zabbix.com/trunk@46962 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2
..F....... [ZBX-8382] fixed trigger severity sound not stopping in user profile form on "Stop" button press

git-svn-id: svn://svn.zabbix.com/trunk@46965 f4e7fd02-d210-4e34-a1e0-d4093fb66cc2