FEAT #20284 TIME 0 add new API route externalSignatoryBookReturn/{token} -> FastOTPController::getReturnFast()

FEAT #17436 TIME 0:30 removed GroupController::getGroupPrivilege() route in favor of GroupController::getById()

FEAT #17436 TIME 0:30 fixed UserController::hasRightByUserId(); applied it to UserController::update()

FIX #16205 TIME 5 debug indexation error and certificate in customer + improve control for reference length