Update OOjs UI to v0.1.0-pre (dd294dc785)

New changes:
f9e65d6 Revert "Make scrolling in PanelLayout smoother on iOS"

Change-Id: I095717ce24aaa28835bb7869c43edb898f5291b9
Merge "Update OOjs UI to v0.1.0-pre (dd294dc785)"