Nested polymorphic hour building legs and stops added, needs restyling

cntmanage/flightslot/admins/weekpred_adm.py

@@ -18,8 +18,8 @@ from ..actions.exportweek import export_selected
 
 from datetime import date
 
-class WeekPreferenceAdmin(nested_admin.NestedModelAdmin):
-    inlines = (TrainingInLIne, HourBuildingInLine,)
+class WeekPreferenceAdmin(nested_admin.NestedPolymorphicModelAdmin):
+    inlines = (TrainingInLIne, HourBuildingInLine, )
     list_display = ("week", "student__surname","student__name", "student__course", "course_color", "student_brief_mix",)
     list_filter = ("week", "student__course", "student",)
     actions = ("export",)