#39 Drop fundings

* removes fundings from all models, except the EMA model for migration compatibility (some old data may have fundings data)

ema/models.py

@@ -1,9 +1,10 @@
 import shutil
 
-from django.contrib.auth.models import User
 from django.db import models
 from django.db.models import QuerySet
 
+from codelist.models import KonovaCode
+from codelist.settings import CODELIST_COMPENSATION_FUNDING_ID
 from compensation.models import AbstractCompensation
 from ema.managers import EmaManager
 from ema.utils.quality import EmaQualityChecker
@@ -27,6 +28,16 @@ class Ema(AbstractCompensation, ShareableObject, RecordableObject):
     EMA therefore holds data like a compensation: actions, before-/after-states, deadlines, ...
 
     """
+    fundings = models.ManyToManyField(
+        KonovaCode,
+        blank=True,
+        limit_choices_to={
+            "code_lists__in": [CODELIST_COMPENSATION_FUNDING_ID],
+            "is_selectable": True,
+            "is_archived": False,
+        },
+        help_text="List of funding project codes",
+    )
     objects = EmaManager()
 
     def __str__(self):