Avoid setting the slot duration at import

Addresses #14 (closed)

AKModel/views/ak.py

@@ -59,8 +59,8 @@ class AKJSONExportView(AdminViewMixin, FilterByEventSlugMixin, ListView):
         """Test if event is not covered by availabilities."""
         return not Availability.is_event_covered(self.event, availabilities)
 
-    def _test_ak_fixed_in_slot(self, ak_id, slot: Availability, ak_fixed: dict) -> bool:
-        """Test if AK defined by `ak_id` is fixed to happen during slot."""
+    def _test_akslot_fixed_in_timeslot(self, ak_slot: AKSlot, timeslot: Availability) -> bool:
+        """Test if an AKSlot is fixed to overlap a timeslot slot."""
         if not ak_slot.fixed or ak_slot.start is None:
             return False