DeprecationWarnings since switching to Django 1.3

[Māris Fogels]

We have been seeing DeprecationWarnings since switching the application to Django 1.3. Here is a sample:

../sourcecode/django/django/db/__init__.py:19: DeprecationWarning: settings.DATABASE_* is deprecated; use settings.DATABASES instead.
  DeprecationWarning
../sourcecode/django/django/db/__init__.py:60: DeprecationWarning: Short names for ENGINE in database configurations are deprecated. Prepend default.ENGINE with 'django.db.backends.'
  DeprecationWarning