Gareth Barnard posted in the forum recently that the Collapsed Topic course format is now available for Moodle 2.9 and 3.0. From Gareth:
Both versions add an improved ‘responsive’ feature that supports Bootstrap 2.3.2 at the suggestion of Michael de Raadt. If you are using older themes then there is a new setting in the Site administration -> Plugins -> Collapsed Topics area. If you are using a Bootstrap V3 based theme then I will be releasing a new version of Shoehorn soon and I’ve already informed Bas about the functionality for Bootstrap and Elegance themes.
How do you use collapsed topics in your Moodle? Tell us in the comments below!