Converts 'django.views.news.stories.story_detail' to
    ('django.views.news.stories', 'story_detail')

    Taken from django.core.urlresolvers

def get_mod_func(class_string):
    """
    Converts 'django.views.news.stories.story_detail' to
    ('django.views.news.stories', 'story_detail')

    Taken from django.core.urlresolvers
    """
    try:
        dot = class_string.rindex('.')
    except ValueError:
        return class_string, ''
    return class_string[:dot], class_string[dot + 1:]