Intervention relations enhancements

* refactors model relation to compensation and payment by applying 1-n instead of n-n

intervention/models.py

@@ -11,7 +11,6 @@ from django.db import transaction
 from django.utils import timezone
 from django.utils.timezone import now
 
-from compensation.models import Payment, Compensation
 from intervention.settings import INTERVENTION_IDENTIFIER_LENGTH, INTERVENTION_IDENTIFIER_TEMPLATE
 from konova.models import BaseObject, Geometry
 from konova.utils.generators import generate_random_string
@@ -51,8 +50,8 @@ class Intervention(BaseObject):
     next_version = models.ForeignKey("Intervention", null=True, blank=True, on_delete=models.DO_NOTHING)
 
     # Compensation or payments, one-directional
-    payments = models.ManyToManyField(Payment, related_name="+", blank=True)
-    compensations = models.ManyToManyField(Compensation, related_name="+", blank=True)
+    #payments = models.ManyToManyField(Payment, related_name="+", blank=True)
+    #compensations = models.ManyToManyField(Compensation, related_name="+", blank=True)
 
     # Users having access on this object
     users = models.ManyToManyField(User)