GPII-245: simplified middleware and config
GPII-245: simplified bootstrap events.
GPII-245: using dynamicGrades for creating requests now.
GPII-245: removed some of the manual assignment of request attributes.
GPII-245: added onRegisterRequest event.
GPII-245: fixed factoring of server.io.
GPII-245: simplified session middleware.
GPII-245: moved session validation to session manager.
GPII-245: made session validation an event.
GPII-245: added onHandleRequest event
GPII-245: added session io specific components.
GPII-245: fixed session and session io separation.