Multiple django version settings support for versions > 1.3

settings.py

try:
    from django.template.loaders.filesystem import load_template_source as todel
    del(todel)
    TEMPLATE_LOADERS = (
        'django.template.loaders.filesystem.load_template_source',
        'django.template.loaders.app_directories.load_template_source',
    #     'django.template.loaders.eggs.load_template_source',
    )
except ImportError:
    TEMPLATE_LOADERS = (
        'django.template.loaders.filesystem.Loader',
        'django.template.loaders.app_directories.Loader',
    #     'django.template.loaders.eggs.Loader',
    )