Fixed an issue in idmapper metaclass wrapper, it caused text fields to be occationally be written with objects.

src/comms/models.py

@@ -523,8 +523,6 @@ class Channel(SharedMemoryModel):
         logger.log_errmsg("Lock_Storage (on %s) cannot be deleted. Use obj.lock.delete() instead." % self)
     lock_storage = property(lock_storage_get, lock_storage_set, lock_storage_del)
 
-    db_model_name = "channel" # used by attributes to safely store objects
-
     class Meta:
         "Define Django meta options"
         verbose_name = "Channel"