[FIXED] The template dir was off since I moved the location of settings.py
[FEATURE] Added the internal IP setting so the sql_queries variable is available in templates
Configure for testing
* Added the POSTGIS_TEMPLATE variable so the Django test runner can create the
  test database
* Added support for using a different DB user when running tests
Override LakeManager.get_query_set so that it prefetches attributes

The default Lake model manager will prefetch the fishing_zone info, and
construct a list of counties the lake belongs to.