Zabbix

..F....... [ZBXNEXT-8486] made item and item prototype forms modal

Merge in ZBX/zabbix from feature/ZBXNEXT-8486-6.5 to master

* commit '7d671a1c8b660464495474ceeb45b42f2e9ba8d5':
  ..F....... [ZBXNEXT-8486] fixed dynamicrows not always returns dom element