Added meta data files, locale folder and set reStructuredText
file extenstion on relevent meta data files.
- Test shuffle: combined test_transforms and test_nothing
- Corrected doc strings in test_set_initial_value
- Added test_set_nothing_initial_value
- Updated TODO
- Stopped using nose coverage plugin (removed options from
  dbcf_tests/settings.py), updated tox to run django-admin.py tests using
  coverage and added .coveragerc file to configure coverage
- Fixed bugs in base.py: Nothing initial db values wheren't being cached
  properly and value db obj cleanup wasn't being called leading to junk
  in the db
- Started writing README