Update OOjs UI to v0.1.0-pre (2a36afc90f)

New changes:
77d1ce2 Revert "Followup ca6a16f: use parent selector both for hiding and showing windows"
2a36afc Revert "Show the modal overlay as soon as openWindow is called"

Change-Id: Ia2f711e680ca92c05323797addc463cc12281a16
Merge "Update OOjs UI to v0.1.0-pre (2a36afc90f)" into wmf/1.25wmf8