elm genlist: Fixed genlist expandable effect bug when we expand/contract items with many children very quickly.
elm genlist: Fixed genlist expandable effect bug when we expand/contract items with many children very quickly.

SVN revision: 70516

tasn/elementary,rvandegrift/elementary,FlorentRevest/Elementary,tasn/elementary,tasn/elementary,tasn/elementary,FlorentRevest/Elementary,tasn/elementary,rvandegrift/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,rvandegrift/elementary,rvandegrift/elementary