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...

OO-984,OO-990: add external id and external reference to the tables of "My courses" and "Authoring environment"

OO-1230: reorder deletion of the groups of a portfolio map, add the beginning of a unit test which checks the deletion of a user

OO-1246: fetch the lifecycle and other security groups in the specialized query for institution managers

toggle button icon alignment improved

OO-1231: save null and empty values from the editor, remove unused method, check all fields in unit test...