Zabbix

 - character '-' can be used to form server name (Alexei)
 - fixed dependencies in functions that delete information for zabbix tables (Alexei)
 - fixed select statement for Network Maps. Host status is correct. (Alexei)
 - availability report will not show not monitored hosts (Alexei)
 - "maxumum" changed to "maximum" in actions.html (Alexei)
 - "have been restarted" changed to "has been ..." (Alexei)