old_contents: """
  Theming template tags.
  
  To load the theming tags just do: ``{% load theming_tags %}``.
  """
  
  from django import template
  from django.conf import settings
  from admin_tools.utils import get_media_url
  
  register = template.Library()
  
  def render_theming_css():
      """
      Template tag that renders the needed css files for the theming app.
      """
      css = getattr(settings, 'ADMIN_TOOLS_THEMING_CSS', False)
      if css:
          css = '/'.join([get_media_url(), css])
      else:
          css = '/'.join([get_media_url(), 'admin_tools', 'css', 'theming.css'])
      return '<link rel="stylesheet" type="text/css" media="screen" href="%s" />' % css
  register.simple_tag(render_theming_css)
  
new_contents: """
  Theming template tags.
  
  To load the theming tags just do: ``{% load theming_tags %}``.
  """
  
  from django import template
  from django.conf import settings
  from admin_tools.utils import get_media_url
  
  register = template.Library()
  
  def render_theming_css():
      """
      Template tag that renders the needed css files for the theming app.
  
      If ADMIN_TOOLS_THEMING_CSS is explicitely defined to None, don't render
      anything.
      """
      rval = ''
      try:
          css_path = getattr(settings, 'ADMIN_TOOLS_THEMING_CSS')
      except AttributeError:
          css_path = 'admin_tools/css/theming.css'
  
      if css_path is not None:
          css_url = '%s/%s' % (get_media_url(), css_path)
          rval = '<link rel="stylesheet" type="text/css" media="screen" href="%s" />' % css_url
  
      return rval
  
  register.simple_tag(render_theming_css)
  
subject: Enable not loading theming CSS by explicitely setting ADMIN_TOOLS_THEMING_CSS to None