Fixed issue with outdated code in settings.py

Error:
Error importing template source loader django.template.loaders.filesystem.load_template_source: "'module' object has no attribute 'load_template_source'"

Found fix here:
http://comments.gmane.org/gmane.comp.python.django.devel/31833

Using Django 1.4.3 so fix could be in later version, haven't updated yet.