* feat: allow groups to specify which cids to show member posts from
* docs: fix tests for openapi
* fix: test breakage caused by improper conditional
* feat: server-side checking of memberPostCids for validity
* feat: admin panel template update to select categories to include
* refactor: privilege helpers.isUserAllowedTo
... to helpers.isAllowedTo, allowing group names to be passed in
Groups.destroy can take an array of groupnames
Groups.leave can take an array of groupnames
db.incrObjectField/decrObjectField can take an array of keys
db.sortedSetRemove can take an array of keys and values
db.setRemove can take an array of keys