Enable popover transitions in wayland
Submitted by Hashem Nasarat
Link to original bug (#760498)
Description
Popovers were disabled because of https://bugzilla.gnome.org/show_bug.cgi?id=696370
(popovers that try and animate over a native window have no transparency and look weird)
But it works in wayland! http://webm.land/media/UT7N.webm
Version: 3.19.x