Case Resources cuts off at 25 contacts when creating case activity

But it's not the usual api3 limit, it's just a default of 25 that it has and there's no ability to set it.

1. Add more than 25 contacts to the Case Resources group.
2. Visit Manage Case and create a Followup.
3. In the send copy section there's only 25 from the group.

Also on Manage Case, in the Other Relationships section, there's a pager for it but it's a bit broken. It cuts off at 10 by default, but doesn't indicate there's more pages, but if you use the dropdown to show 50 it will show all, but there's no indication there's more than 10 available.

This is not a regression. It goes back forever. It's probably unusual to have so many in the group, and this only came up on a test site where older entries had never been removed like they are in real life.