LMSUZH-3503: GTA: move UZH modifications to olat-extension
GTASubmissionEditController: changes from UZH already reverted at merge of OpenOLAT 17.2
Closes LMSUZH-3503
GTASubmissionEditController: changes from UZH already reverted at merge of OpenOLAT 17.2
Closes LMSUZH-3503