FEAT #11775 TIME 0:30 wording + history

src/app/folder/controllers/FolderController.php

src/core/lang/lang-en.php

src/core/lang/lang-fr.php

src/core/lang/lang-nl.php

src/frontend/app/folder/folder-tree.component.html

src/frontend/lang/lang-en.ts

src/frontend/lang/lang-fr.ts

src/frontend/lang/lang-nl.ts