Per-group member settings

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IPS Community Suite 4 does not appear to allow member management on a "per group" basis.

Default notification settings currently apply to all users, and can override individual user settings.

Useful improvements would be:

1)  set default notification settings to be applied to all members of a particular group.

2)  Admin option for whether individual notification settings are permitted override defaults, both globally and per-group.

3)  set user permissions on a per-group basis

If there's some way to accomplish any of that now, I sure can't find it -- maybe somebody can point me in the right direction.