OO-753: remove the optimistic locking from SecurityGroupMemebership and make almost all field immutable

OO-686,OPENOLAT-32: fix enter behavior in wizard, enhance the user search form to accept enter in the autocomplete field and the user attributes form

OO-627: implement data protection feature for "last visit" in course, group and repository member management

OO-586: import members by user names, emails and institutional numbers, remove select box, update wording

After merge: break dependency in the full text search beans, reduce the last generated by the tests of the coaching manager on MySQL 5.1...

OO-535: rework license editor, add column editable, callout to create a list or add to an existing one, sort by mark, drop to menu item favorit, drop to my questions trigger a popup...

CL-220: retrieve the author names for courses as batch (Oracle doesn't like in(...) statement with more than 1000 keys)

OO-538: add some commit before sending an event via JMS (JMS can work the event in a separate thread before the producer commit its changes on the database)

OO-449: fix an issue with roseter entry being locked after restart, reuse the EntityManager created by Spring if one available...

OO-449: move from ehcache to infinispan to have access to a distributed cache in a cluster environment, fix some issues with a cluster environment

OO-271: refactor the user session management, move the the logic in its own manager, persist the time out values, make the admin GUI a bit better

OO-291: fix RS if a user try to delete a repository entry (the issue is part of the group management refactoring but can be older for other resource as tests)

OO-302: add RESt API methods to manage the members of a repository entry, fix an issue with the calendar API, fix an unreliable unit test in UserTest by Oracle, add calendar API tests to the OpenOLAT suite

OO-364: make the access to the autocomplete search of users configurable in the standard controller and in the forum