OO-3295,OO-3538: replace Jersey with Apache CXF (JAX-RS 2.1, Spring integration), remove the JAX-WS stack from Sun, update support for OpenMeetings (patch S. Clemenz)

OO-1615: springuifie mail package, rest package, question pool module... remove unused dependencies...

no-jira: fix the error in perf500 test in PropertyTest, remove reference to log4j logger in tests, remove duplicate closeSession in @after

OO-288: fix security issue with GET repo/courses/courseId/groups, add informations about olatResource in RepositoryEntryVO

OO-291: fix load for update for PostgreSQL, fix unit test for course group management (always consume entity before queriying the database!), fix the statistics rights in the course view

OO-291: first step: move business gourp manager to a business group service, remove dependency to the context...

--HG--
branch : bps