Luke Barnard 9b2feef9eb Add is_public to groups table to allow for private groups
Prevent group API access to non-members for private groups

Also make all the group code paths consistent with `requester_user_id` always being the User ID of the requesting user.
2017-10-26 16:51:32 +01:00
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2017-04-05 14:15:09 +01:00
2017-10-23 15:56:38 +01:00
2017-10-24 14:15:27 +01:00