ONVIF_EVENTS_PATH & ONVIF_Alarm_Text are not set by default

[IgorA100]

When creating a new monitor, "ONVIF_EVENTS_PATH" & "ONVIF_Alarm_Text" are left empty.
"ONVIF_Alarm_Text" broke about 3 weeks ago.
"ONVIF_EVENTS_PATH" - after it was added, it was registered by default on existing monitors, but remains empty on new ones.

[iconnor]

Just pushed a fix.