Update OOjs UI to v0.1.0-pre (a7ce4d48d9)

New changes:
6847186 Tests: Move …/test/… to …/tests/… to be the same as other repos
c2ee74f Handle touch events in toolbars and toolgroups
84b51fe Localisation updates from https://translatewiki.net.
a875313 Make TextInputWidget's autosizing work when setValue() is called

Change-Id: I9c26f04281f1988cacaaf7d72753e06419541873
Merge "Update OOjs UI to v0.1.0-pre (a7ce4d48d9)"