write SRP registration and authentication wrapper
To be used by eip client to access the provider resources. First step should be writing a simple authentication script that works against the webapp auth. Later we will work on integrating that with our codebase (it should be a wrapper using requests)
(from redmine: created on 2012-09-26, closed on 2012-10-25, relates #801 (closed), blocks #744 (closed))