Update OOjs UI to v0.1.0-pre (44db8292bf)

New changes:
bcc2927 Display keyboard shortcuts in right gutter of toolbar menus
f73d2b6 Localisation updates from https://translatewiki.net.
42be2b7 Progress bar widget
9833d47 Fix consoles in widgets demo
83645c4 OoUiPHP: Improve theme singleton handling
b4f0bc7 Add composer.json, use it for autoloading

Change-Id: I8770f4359eb912e01371cd6843da6dd61d832c3a