Function: Check if a role string is valid

Function: Get moderators for a specific object ID. Will return global moderators when object ID is empty.

Function: Add a moderator to an object

Function: Remove a moderator user ID from an object

Function: Get user IDs of moderators for an object

Function: Checks if user is not active.

Function: Checks if user is a keymaster

Function: Does a user have a profile for the current site

Function: Checks if the user has been marked as deleted.

Function: Checks if user is active