Zabbix

A......... [ZBX-5684] fixed problem when updating non normal items status, it's flag is changed to normal;
A.F....... [ZBX-5684] fixed inconsistency that CItem get() returned discovery rules and item prototypes; 
fixed typo in disc_prototypes.php line 152, remarkably working before with CItem get() call;
added support for CItemPrototype get() for 'webitems' and 'graphids;
added possibility to unset 'flags' parameter in CItem get();
added support for 'interfaceids' parameter in CDiscoveryRule get();