old_contents: from django.contrib import admin
  from .models import Photo
  from .models import Album, Face
  # Register your models here.
  
  admin.site.register(Photo)
  admin.site.register(Album)
  admin.site.register(Face)
  
new_contents: from django.contrib import admin
  from .models import Photo, Album, Face
  
  # Register your models here.
  
  admin.site.register(Photo)
  admin.site.register(Album)
  admin.site.register(Face)
  
subject: fix merge conflicts