OO-631: fire events on JMS after committing the membership changes, add a direct event for enrollment to update the GUI in a synchronous manner

OO-615: implements a simple filter to allow CORS (cross origin resource sharing) but restricted to the rest api

OO-609: if the evaluation raise an error, denied access instead of red screen and log the condition, it's not the fault of the user

OO-606: don't return "WWW-Autorization" if authenticated, doesn't allow BitKinex in OLATServlet, update cache config converter...