og_manage - additional administration interface for bulk OG management

This module intened for advanced OG administration.
Now there added tab to user account where administranor can select groups user belong to and make user of this groups or remove membership on one page.

This module is for sites having less then e.g. 100 created groups in it(but can propely work for sites with larger amount of groups).

We plan add page to admin area where will be possible select users from given groups by filters add to groups, etc. But we haven't solved yet how to make this feature better.

For now all code is for D6. We believe, migration to D7 is not so difficult task for us, but co-maintainers are welcome.