List all UDF for specified idUDF
mode = 0 - id is sourceid
mode = 1 - id is taskid, list all for this taskid and it's parents
mode = 2 - id is userid, list all for this userid and it's managers
mode =3 - id is taskid, list all for this taskid and it's parents.
list all ACL users, not assigned to this or parent task
and that managed by me (direclty or indirectly)
only this users can be added to ACL (because other already added)