Add user should be included in group details block

The add new user gets added nicely to the navigation however it doesn't appear on the group details block.
We should add this link to this block with an argument back-reference to the group you are currently visiting.

On the add user form, the form should take the traditional ?gids[]= paramater from the url to lock the group selector as it does for normal node creation.

I am currently implementing something very similar and will post my findings here once I've got it completed. If anyone has any ideas on how to achieve this then please let me know before I plough into this.

Cheers and keep up the good work. This module rocks.