Make sure author, assignee and closed_by issues are dict so we can include more info about that user.
Make sure author, assignee and closed_by issues are dict so we can include more
info about that user.

tonybaloney/st2contrib,pidah/st2contrib,tonybaloney/st2contrib,StackStorm/st2contrib,pearsontechnology/st2contrib,pidah/st2contrib,pearsontechnology/st2contrib,armab/st2contrib,armab/st2contrib,StackStorm/st2contrib,pearsontechnology/st2contrib,pidah/st2contrib,StackStorm/st2contrib,psychopenguin/st2contrib,armab/st2contrib,tonybaloney/st2contrib,psychopenguin/st2contrib,pearsontechnology/st2contrib