Anonymous users can now submit userlinks. Added two new permissions: "edit all userlinks" and "edit own userlinks" which control update and delete access to userlinks.
This branch introduces some important SQL optimizations, which drastically reduce the number of database records required for sites with a large number of terms and roles. The admin interface has been updated to allow you to keep your access rules lean and mean.
The changes should ease administration, make some queries faster, and have certainly made the code simpler. The important stuff seems to be working, but please test your rules carefully and report any anomalies (include a simple example of an access scheme which doesn't behave as expected so that we can replicate).
Wrapped the "(unsubscribe)"-text with the function t() around line 349, for easy localization of the string
Added functionality to hook_user and hook_og to remove the user role info from og_users_roles table if the user is either unsubscribed from group or deleted from site.