OO-449: first part of the implementation: remove smack libraries, refactor controller and unify them, implements messaging across the OpenOLAT event bus, implements administration part to enable chat...

OO-445: make the date in "Home > Subscriptions" mandatory and don't retrieve the news if there isn't a date.

OO-291: change the behavior of the buttons in "User admin > User > Groups > Add to groups". The search is activated by enter in the popup but not in the wizard

OO-433,OO-441: optimize data retrieval, save default values of properties which doesn't exist, check if the table controller is not disposed after loading start the data

OO-443: decrease level of the log to debug. If a user has not access to a resource, it's not an error

OO-438: fix an empty  select ... in () in the query to update the subscribers if there isn't subscribers to update

OO-436: enhance the method which check if a real email must be send. The method test the single CC too.

OO-435: overwrite the state saved in the course if the course is in the catalog but the state was saved as "no" (doesn't link it in the catalog) in a precedent publication

OO-418: add a workaround to the importer in one step which prevents to finish several time the course import

OO-407: implements a DAO with its own database table instead of o_property, implements download of recording, scaling of the recording, wording...

OO-419: add a unit test to check if the velocity templates are parseable, remove some unused templates, fix the auto-completion in french