Update OOjs UI to v0.1.0-pre (9aad824bd6)

New changes:
414c051 build: Update jscs and use new "wikimedia" preset
0401aff Accessibility: Set aria-hidden attribute on elements while dialogs are open
9aad824 Revert "Accessibility: Restore element focus when a window closes"

Change-Id: I1da7319c2ab284e93007db7f21c25db0c64b149f
Merge "Update OOjs UI to v0.1.0-pre (9aad824bd6)"