EZP-22733: implement missing method
EZP-22733: use role exception conversion gateway
EZP-22734: fixed wrong identifier configuration
Merge pull request #817 from ezsystems/fix-EZP-22733-role-exception-conversion-gateway

Fix EZP-22733: Role exception conversion gateway is missing a method and is not used
Merge pull request #818 from ezsystems/fix-EZP-22734-usergroup-limitationtype-config

EZP-22734: UserGroup limitation type is incorrectly configured