new_contents: from django.contrib import admin
  
  from db.admin.jobs import JobStatusAdmin
  from db.admin.utils import DiffModelAdmin
  from db.models.build_jobs import BuildJobStatus, BuildJob
  
  
  class BuildJobAdmin(DiffModelAdmin):
      pass
  
  
  class BuildJobStatusAdmin(JobStatusAdmin):
      pass
  
  
  admin.site.register(BuildJob, BuildJobAdmin)
  admin.site.register(BuildJobStatus, BuildJobStatusAdmin)
  
subject: Add build job admin