new_contents: from django.contrib import admin
  from .models import *
  
  
  class UnfinishedSubmissionStubAdmin(admin.ModelAdmin):
  
      model = UnfinishedSubmissionStub
      list_display = [
          'xform_id',
          'timestamp',
          'saved',
          'domain',
      ]
  
      search_fields = [
          'xform_id',
      ]
  
      list_filter = [
          'timestamp',
          'saved',
          'domain',
      ]
  
  
  admin.site.register(UnfinishedSubmissionStub, UnfinishedSubmissionStubAdmin)
  
subject: add admin UI for unfinished submissions