WIP: BRCD-1536 - Define events by percentage + trigger by different groups - UI
New look for event creation / modification when using Usage based event, and limiting to groups:
- selecting property type (from property types that are being used in some service group).
- selecting group/s from groups that are relevant to that property type.
- selecting Unit of Measure for those groups.
New operator - 'Reached percentage':
- When chosen, eliminates 'unit of measure' field (isn't necessary for BE).
- allows multiple values for event (tags).
Checked adding new event, usage based, with multiple groups included and operator 'reached percentage' - passed and saved as expected in BRCD-1241.