popup.edc: Follow new namespace.
popup.edc: Follow new namespace.

Since 7b7c2275, popup style is broken so buttons are not drawn using default theme.

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