RSM

.......... [RSM-1] merge from upstream (dev)

Resolved conflicts:
	create/src/schema.tmpl
	opt/zabbix/scripts/ApiHelper.pm
	opt/zabbix/scripts/sla-api-recent.pl
	opt/zabbix/scripts/slv/rsm.slv.dns.ns.avail.pl
	opt/zabbix/scripts/update-api-data.pl
	src/zabbix_server/poller/checks_simple_rsm.c
	ui/include/defines.inc.php
	ui/include/schema.inc.php