switch to using a custom user model

Signed-off-by: Imre Deak <imre.deak@gmail.com>
django 1.5: switch tastypie to a development version

Signed-off-by: Imre Deak <imre.deak@gmail.com>
remove facebook app

Signed-off-by: Imre Deak <imre.deak@gmail.com>
add support for authentication via email/pass and social sites

Signed-off-by: Imre Deak <imre.deak@gmail.com>