Group selection module
My work on the autosave support has been postponed (see the tracker for details) so I decided to look at the Group selection module. During almost the whole Moodle history there were some patches available allowing students to select their group themselves. But as the group API has changed several times in the recent versions (…or There and Back Again 
) these patches do not work any more. Also, for a long time it wasn’t clear if this should be a part of groups UI or a separate activity module (eg. integrated into Choice).
It seems to me like a good decision to implement this as an activity module. Together with groupings, this for example allows to have a group selection as the first module in every topic section. And after a student chooses her group (imagine a work group, project role etc.), the rest of activities relevant for this group automagically appears (since they are available only for selected groupings). This allows course creators to desing inetractive non-linear courses. I can imagine this become part of 1.9.5 in case of strong demand. Check and comment MDL-1310.
