Convert toolbar structure group from bar to list

Change-Id: I84a4d948aeca995d32cd78840ce153f1d18adb2f
Update OOjs UI to v0.1.0-pre (7b283a9dcc)

New changes:
71d9671 Add more Agora dialogs styling
457a0ef Localisation updates from https://translatewiki.net.
c92ba96 Compute directionality for frame correctly
f3414b8 Localisation updates from https://translatewiki.net.
90fbb6f Localisation updates from https://translatewiki.net.
1d4d52a Localisation updates from https://translatewiki.net.
08d1c7b Add ability to put a header at the top of a toolGroup pop-up

Change-Id: I450b2177b6cff6198c6c7d9d231118d7ed70cc50
Merge "Update OOjs UI to v0.1.0-pre (7b283a9dcc)"