LDEV-1107 extserver classes are created as subgroups, not groups; make extuser a member of the group as well as the subgroup; don't give extusers group manager role as they don't need it, especially in a subgroup
Reset the optional parameters - if they aren't reset and the jsp page doesn't specify them, then they are reused in all instances of this tag on the page. This resulted in one answer being used for all questions on a q&a page where more than one question is displayed at a time (ie combined mode).