move dao_create/dao_update fn to dao_utils

they're totally generic anyway

app/dao/broadcast_message_dao.py

@@ -1,16 +1,4 @@
-from app import db
 from app.models import BroadcastMessage, BroadcastEvent
-from app.dao.dao_utils import transactional
-
-
-@transactional
-def dao_create_broadcast_message(broadcast_message):
-    db.session.add(broadcast_message)
-
-
-@transactional
-def dao_update_broadcast_message(broadcast_message):
-    db.session.add(broadcast_message)
 
 
 def dao_get_broadcast_message_by_id_and_service_id(broadcast_message_id, service_id):

app/dao/dao_utils.py

@@ -73,3 +73,9 @@ def version_class(*version_options):
 
 def dao_rollback():
     db.session.rollback()
+
+
+@transactional
+def dao_save_object(obj):
+    # add/update object in db
+    db.session.add(obj)