openolat#269: default presentation of structure element reset to peekview again

src/main/java/org/olat/course/nodes/STCourseNode.java

@@ -379,7 +379,7 @@ public class STCourseNode extends AbstractAccessableCourseNode {
 		ModuleConfiguration config = getModuleConfiguration();
 		if (isNewNode) {
 			config.setBooleanEntry(STCourseNodeEditController.CONFIG_KEY_ALLOW_RELATIVE_LINKS, Boolean.FALSE.booleanValue());
-			config.setStringValue(STCourseNodeEditController.CONFIG_KEY_DISPLAY_TYPE, STCourseNodeEditController.CONFIG_VALUE_DISPLAY_DELEGATE);
+			config.setStringValue(STCourseNodeEditController.CONFIG_KEY_DISPLAY_TYPE, STCourseNodeEditController.CONFIG_VALUE_DISPLAY_PEEKVIEW);
 			config.setIntValue(STCourseNodeEditController.CONFIG_KEY_COLUMNS, 2);
 
 			DeliveryOptions defaultOptions = DeliveryOptions.defaultWithGlossary();