OO-3425: in the publish process, delete the offer and not the offer access as in the access configuration panel

OO-3297, OO-3301: refactor security group management operations in its own DAO, implement isInOrganisation mfunction for course expert rules

OO-3297: refactor the user management to use organization for managing the roles instead of named security groups

OO-3058: disable the optimistic locking by efficiency statement and replace with last commit win (in all case, the last which compute it win, locking or not)

OO-2868 improve copy/paste links by wrapping them in an input field for proper selection without trailing whitespace

OO-2836: update to selenium 3.4, migrate the tests to pass with chrome, add css class mostly in wizards, remove some fieldset in fieldset, add some label around checkbox

OO-2510: send publish after publishing is finished, speed up batch update of check lists and efficency statements...

OO-2464: send publish after publishing is finished, speed up batch update of check lists and efficency statements...

OO-2421: enhance the cycle detector to only check expert rules method which have a risk to create a cycle

OO-2043: add message under the toolbar is a course is freezed, better handler changes of status, reload course element by status changes...

no-jira: backport multi-filters feature from selectus and some other small things, move TreePosition in core