pinax-groups-experiments: experiments with pinax/groups and the pinax/sample_group_project to add a new feature, try a variation, and improve navbars. This project is just an experiment. It does not pretend to be the best way to implement this stuff. But it does mostly work. This is a pinax project, dependent on (and runs with) pinax 0.7 or 0.7.1. You must have one of those pinax bases installed in a virtualenv and activated. NEW FEATURE: Nested groups, in this case company/projects/tasks, where a Company (a Group) can have Projects (other groups) which have Tasks. These are ~not~ infinitely nested groups. Will only work for 2 levels. VARIATION: A content app (economic_events) where each content app instance is related to two different groups (companies). NAVBAR IMPROVEMENTS: * Project/tasks retains the Project maintab hilite * Likewise Company/Project/Tasks retains the Company maintab hilite * Subnav selections are hilit