### One-sentence description Add BooleanField that toggles public display of MemberGroup members ### Why? Because some nicknames are weird. And we've got sponsors and other externals to care about. Plus: external people don't need to know names and they can't even see profiles. ### Current implementation Show members on board/committee/society pages ### Desired implementation Do not show members on board/committee/society pages when you're not authenticated and the added field is checked/non-checked. Better to explicitly check the field for public display probably.