OO-3254 : author can freely add and remove the course from the catalog if the course is closed

src/main/java/org/olat/course/run/CourseRuntimeController.java

@@ -565,7 +565,7 @@ public class CourseRuntimeController extends RepositoryEntryRuntimeController im
 			
 			catalogLink = LinkFactory.createToolLink("access.cmd", translate("command.catalog"), this, "o_icon_catalog");
 			catalogLink.setElementCssClass("o_sel_course_catalog");
-			catalogLink.setVisible(repositoryModule.isCatalogEnabled() && !uce.isCourseReadOnly());
+			catalogLink.setVisible(repositoryModule.isCatalogEnabled());
 			settings.addComponent(catalogLink);
 			
 			settings.addComponent(new Spacer(""));