new_contents: from cms.app_base import CMSApp
  from cms.apphook_pool import apphook_pool
  from django.utils.translation import ugettext_lazy as _
  
  class BrowserApp(CMSApp):
      name = _("Genome Browser App")
      urls = ["cms_genome_browser.urls"]
      app_name = "cms_genome_browser"
  
  apphook_pool.register(BrowserApp)
  
subject: Create BrowserApp app hook for CMS