old_contents: from django.contrib import admin
  from laws.models import Law
  
  class LawAdmin(admin.ModelAdmin):
      list_filter = ["title"]
      list_display = ["title", "section", "psection", "num_references", "level", "order", "text", "source"]
  
  admin.site.register(Law, LawAdmin)
  
new_contents: from django.contrib import admin
  from laws.models import Law
  
  class LawAdmin(admin.ModelAdmin):
      list_filter = ["title"]
      list_display = ["title", "section", "psection", "num_references", "level", "order", "text", "source"]
      readonly_fields = ('references',)
  
  admin.site.register(Law, LawAdmin)
  
subject: make references readonly in admin (too slow to low otherwise)