Editorial
Reduced function that is not supposed to be used.
Editorial
Moved reference to point to the right variable.
New common classes
Added a new configuration parameter - session_storage
Small fixes.
Removed imports that wasn't used.
Added cookie handling functions.
MongoDB based identity cache.
Choose session storage.
Mongo DB might not be present so 'basic' tests should not depend on its presence.
Mako is needed to run the examples.