drop python 2.6 (not supported by django any more)
switch from django-registration (dead and broken) to django-registration-redux, fix issue #116
remove south dependency (and south migrations)
create new initial migration with django's builtin migrations
update docs
we include the tests in the pypi package, so we should include conftest.py also
include the patch for for django-registration needed to run it with django 1.6
