Update OOjs UI to v0.1.0-pre (ac0cc69508)

New changes:
5c41645 Localisation updates from https://translatewiki.net.
c4651d5 readme: Use <br/> instead of <br> to satisfy gitblit's Markdown parser
5345806 Make it possible to configure LabeledElement to not use autoEllipsis
ac0cc69 Use boolean instead of bool in LabeledElement docs

Change-Id: I0e8bf836035402bc893c4dc58cb9d5441b7bd330