OO-2391: reload the reference before removing it

src/main/java/org/olat/modules/openmeetings/manager/OpenMeetingsDAO.java

@@ -135,7 +135,9 @@ public class OpenMeetingsDAO {
 	}
 	
 	public void delete(OpenMeetingsRoomReference ref) {
-		dbInstance.getCurrentEntityManager().remove(ref);
+		OpenMeetingsRoomReference reloadedRef = dbInstance.getCurrentEntityManager()
+				.getReference(OpenMeetingsRoomReference.class, ref.getKey());
+		dbInstance.getCurrentEntityManager().remove(reloadedRef);
 	}
 	
 	public String serializeRoom(OpenMeetingsRoom room) {

src/main/java/org/olat/modules/openmeetings/ui/OpenMeetingsAdminRoomsController.java

@@ -193,7 +193,7 @@ public class OpenMeetingsAdminRoomsController extends BasicController {
 	
 	protected void confirmDelete(UserRequest ureq, OpenMeetingsRoom room) {
 		String title = translate("delete");
-		String text = translate("delete.confirm", new String[]{ room.getName() });
+		String text = translate("delete.confirm", new String[]{ StringHelper.escapeHtml(room.getName()) });
 		dialogCtr = activateOkCancelDialog(ureq, title, text, dialogCtr);
 		dialogCtr.setUserObject(room);
 	}