#31 API Share

* adds support for GET and PUT of sharing users for all data types (compensation is shared via intervention)

api/utils/serializer/v1/compensation.py

@@ -12,6 +12,7 @@ from compensation.models import Compensation
 from intervention.models import Intervention
 from konova.models import Geometry
 from konova.tasks import celery_update_parcels
+from konova.utils.message_templates import DATA_UNSHARED
 from user.models import UserActionLogEntry
 
 
@@ -88,7 +89,7 @@ class CompensationAPISerializerV1(AbstractModelAPISerializerV1, AbstractCompensa
         is_shared = intervention.is_shared_with(user)
 
         if not is_shared:
-            raise PermissionError("Intervention not shared with user")
+            raise PermissionError(DATA_UNSHARED)
 
         obj.intervention = intervention
         return obj