organization, implement segment view for user visit card to better
inline in user management, implements several features for all roles
(allow enrollment, mandatory confirmation email by enrollment, allow
autocomplete, bulk changes...), add roles like lecture manager, quality
manager..., enhance the roles editor in user management

OO-3317: break the spring dependency cycle to ensue the access control module set the settings on the database once initialized

OO-1873: replace the listing of booking by a native query optimized for our standard setup, replace the .hbm.xml with annotations, add more fetching overall

OO-1443: upgrade JUnit ( long overdue ), remove deprecated junit.* packages, fix some issues with order dependent tests, fix an issue with empty ClusterDoInSync

OO-386: remove the async executor of the repository manager and replace it with a evict from cache, select for update, merge process

OO-291: implements access control in group (with waiting list, special case for paypal...) ad write some unit tests to control the different behaviors