Remove the optimization which loads the offers of published groups as it
seems that Hibernate 5.4 struggled with the join

Remove the course subscription of the members of the deleted business
groups

owned the area, add a warning in the area list of group if one of them
doesn't link to the course

curriculums in the services too

to curriculum coaches and participants and assessment tool

of administrator role in organisation tree, enhance UI in user
management and fix some permission issues to edit invitee and guest,
remove admin by-pass for the full text search...

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-2676: simplify html code of calendar event editor and repository info editor, replace synchronized in velocity with a ConcurentHashSet to reduce lock contention, remove double update method for groups...

OO-2479: reduce overhead everywhere, optimized and simplified query to count the participants of a group, bypass reloading the group set of identities, bypass reloading the base group of business group...

OO-2429: move the foreign key from identity to user, remove double mapping of identity, add more unit tests for invitation, unify the methods to create the user and identity

OO-1593: add license of qtiworks and additional libraries, add unit tests, select a default response for new simple choice in editor...

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-1616: replace the view for the business group lists with several customized queries which load only the needed data

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

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

OO-1424: remove subscriptions if a member is removed from a group or a course, or a group is removed from the relations to a course

OO-1228: reduce sleep time in unit tests, update undertow, remove some translator error in course wizard, make that the unit tests for the identity power search really test and fail if something goes wrong...